Black Hole Links

http://antwrp.gsfc.nasa.gov/apod/lib/black_holes.html Astronomy Picture of the Day Index – Stars: Black Holes | Archive | Index | Search | Glossary | Today’s Picture | Accretion Disk Binary System A Black Hole in M87’s Center? Too Close to a Black Hole LMC X-1: A Black Hole Candidate A Star Where Photons Orbit The X-ray Sources of M31 This index…

http://www.amtp.cam.ac.uk/user/gr/public/bh_home.html BLACK HOLES Introduction to black holes Observational evidence for black holes Black holes and critical phenomena [Back][Cosmology][Cosmic strings][Inflation][Quantum gravity][Home][Next…

http://www.owlnet.rice.edu/~spac250/steve/index.html The Search for Black Holes The Search for Black Holes Steven Degennaro’s SPAC250 final project… Black holes, if they truly exist, are very strange objects indeed. Imagine, if you will, an object resting in the vast emptiness of space, totally undetectable except for its gavitational pull…

http://www.rdrop.com/users/green/school/primordi.htm Main Page Black Hole Formation Black Hole Detection Event Horizon Primordial Black Holes Quasars Hawking Radiation The Information Paradox Frame Dragging Likely Black Hole Candidates Our Attempts To Contact Stephen Hawking Glossary References Used About the Authors Another type of black…

http://www.owlnet.rice.edu/~spac250/steve/ The Search for Black Holes The Search for Black Holes Steven Degennaro’s SPAC250 final project… Black holes, if they truly exist, are very strange objects indeed. Imagine, if you will, an object resting in the vast emptiness of space, totally undetectable except for its gavitational pull…

http://web.mit.edu/afs/athena.mit.edu/user/r/e/redingtn/www/netadv/bh.html The Net Advance of Physics: BLACK HOLES As Astronomical Objects or In Field Theory Part One: ASTRONOMICAL BLACK HOLES General + Observations (?) of Black Holes + Evaporation + Thermodynamics + BLACK HOLES IN FIELD THEORY GENERAL: Overviews: Elementary: Black Holes FAQ, by Ted…

http://www.phy.syr.edu/~jbornak/ Jillian’s Guide to Black Holes Loosely affiliated with the slightly less well-known Jillian’s Guide to Gravitational Waves. Forming ’em Types of ’em Outside ’em Inside ’em Finding ’em References Stellar,Coincidential,and Primordial Static,Charged,and Rotating Accretion disksand Energy Stealing…

http://csep10.phys.utk.edu/guidry/violence/blackholes.html Black Holes Black holes are peculiar objects with many strange properties, but most books and articles have emphasised their exotic aspects, and obscured their fundamentally simple nature. Here is a link to some Frequently Asked Questions (and answers!) about black holes. The description given…

http://www.damtp.cam.ac.uk/user/gr/public/bh_obsv.html Observational Evidence for Black Holes Dust disk around a black hole This Hubble Space Telescope image contains three main features. The outer white area is the core or centre of the galaxy NGC4261. Inside the core there is a brown spiral-shaped disk. It weighs on hundred thousand times as…

http://casa.colorado.edu/~ajsh/relativity.html #160 Andrew Hamilton’s Homepage #160 Falling into a Black Hole #160 A tour of Special Relativity #160 Cosmology links #160 ASTR 3740 Homepage (Spring 2000) Relativity and Black Hole links: Spacetime Wrinkles, a relativity exhibit. Space Telescope Science Institute for pics from Hubble…

http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html Virtual Trips to Black Holes and Neutron Stars by Robert Nemiroff (Michigan Technological University) Ever wonder what it would look like to travel to a black hole? A neutron star? If so, you might find this page interesting. Here you will find descriptions and MPEG movies that take you on…

http://imagine.gsfc.nasa.gov/docs/science/know_l2/black_holes.html There are many popular myths concerning black holes, many of them perpetuated by Hollywood. Television and movies have portrayed them as time-traveling tunnels to another dimension, cosmic vacuum cleaners sucking up everything in sight, and so on. It can be said that black holes are really…

http://intothecosmos.com/ This page uses frames, but your browser doesn’t support them. Try downloading either Netscape 2.0 and up or Internet Explorer 3.0 and up. If you had a browser that supported frames here is what you’d see: black, black holes, hole, frayed, quasars, gravitational, colliding, hawking…

http://casa.colorado.edu/~ajsh/schwhist.html Site History The “Falling into a Black Hole” animations on this site were originally made for the finale of a “Black Holes Relativity” show, one of the regular live Evening Star Shows at Fiske Planetarium. The show was first presented in January 1997, and proved to be of unprecedented…

http://imagine.gsfc.nasa.gov/docs/introduction/black_holes.html Black Holes Level 1 topics include: Introduction to Black Holes Journey into a Black Hole! Level 2 topics include: Black Holes: What Are They? If We Can’t See Them, How Do We Know They’re There? What About All the Wormhole Stuff? Take Me to Level 1 Information Take Me to Level 2 Information…

http://www.phys.vt.edu/~astrophy/faq/blackholes.html Frequently Asked Questions About Black Holes Maintained by Dr. John Simonetti of the Department of Physics at Virginia Tech. Back to Frequently Asked Astronomy and Physics Questions What does the exclusion principle have to do with whether or not a star becomes a black hole? [Or,] why do some…

http://physics7.berkeley.edu/BHfaq.html Black Holes FAQ (Frequently Asked Questions) List by Ted Bunn What is a black hole? How big is a black hole? What would happen to me if I fell into a black hole? My friend Penelope is sitting still at a safe distance, watching me fall into the black hole. What does she see? If a black hole existed…

http://www.ncsa.uiuc.edu/Cyberia/NumRel/TopVideoScript.html Expo/Science Industry/Spacetime Wrinkles | Back | Map | Glossary | Information | Expo Home | To the Edge with Einstein: video script A supermassive black hole is thought to lurk inside the core of this galaxy. Relentlessly its intense gravitation sucks in stars, gas and all nearby matter. Even…

http://www.rdrop.com/users/green/school/radiatin.htm Main Page Black Hole Formation Black Hole Detection Event Horizon Primordial Black Holes Quasars Hawking Radiation The Information Paradox Frame Dragging Likely Black Hole Candidates Our Attempts To Contact Stephen Hawking Glossary References Used About the Authors The Hawking Radiation…

http://dir.yahoo.com/Science/Astronomy/Astrophysics/Stellar_Phenomena/Black_Holes/ Personalize Help – Check Email Home gt Science gt Astronomy gt Astrophysics gt Stellar Phenomena gt Black Holes Click Here! all of Yahoo! just this category Inside Yahoo!News: Extrasolar PlanetsNews: Astronomy and SpaceNews: Hubble Space TelescopeNews: Jupiter Galileo MissionNews: Space…

http://www.rdrop.com/users/green/school/quasars.htm Main Page Black Hole Formation Black Hole Detection Event Horizon Primordial Black Holes Quasars Hawking Radiation The Information Paradox Frame Dragging Likely Black Hole Candidates Our Attempts To Contact Stephen Hawking Glossary References Used About the Authors Quasars are the…

http://www.teleport.com/~jhahs/Main.html Black Holes Novae My name is David Hahs. I’m an 8th grader at Stoller Middle School. Click on a link below for more information In this project, you will find out how black holes are formed, how and why novae occur, and how the two relate. How are Black Holes…

http://www.geocities.com/Area51/Nebula/9642/index.html The above advertisement is not affiliated with the Mysteries of Space Site. Welcome to the Mysteries of Space Web Site! This Site contains information, trivia, and opinions on matters such as extraterrestrials, black holes, time, relativity, and wormholes. Currently behind the scenes, we are…

http://www-xray.ast.cam.ac.uk/oday/agn_bh.html GO BACK Black Holes The force of gravity pulls us towards the centre of the earth. Only objects with very high speeds, like rockets, can escape earth’s gravity. Black holes have so much mass and such a high density that nothing, not even light can escape from them. As light cannot escape from…

http://ispec.scibernet.com/virtual/black_holes.shtml ONLINE MATERIAL FOR BLACK HOLES NOTE: Links on this page will open a new browser Black Holes and Neutron Stars Virtual Trips to Black Holes and Neutron Stars…

http://members.cruzio.com/~ftc BLACK HOLES SUCK AND THE BIG BANG WAS A SQUIB However useful the concept of a singularity, invented by Newton and Leibnitz, may be for precisely formulating mathematical expressions that describe reality, there are no exles of such in the real world. It is therefore not plausible to postulate…

http://ispec.scibernet.com/virtual/black_holes.text.shtml ONLINE MATERIAL FOR BLACK HOLES Note: Links will open new browser window What is a Black Hole? Black Holes and Neutron Stars Virtual Trips to Black Holes and Neutron Stars Cambridge University’s…

http://constellation.gsfc.nasa.gov/ What really happens close to a black hole? How does the iron made in the core of a star end up pulsating through our veins? What new and exotic forms of matter await our discovery…

http://nsccux.sccd.ctc.edu/~dkoval/remnants.htm Stellar Remnants and Black Holes Black Holes A look at questions that arise after you first encounter what a black hole is. More on Black Holes Movie Trips Through Black Holes and Pulsars Fun if your computer has some memory. Stellar Remnants A good overview on the possible ends a star may…

http://www.dnai.net/~zap/astronomy/blckhole.htm BLACK HOLES Graphical Representations of Black Holes The black hole is attacked as not existing. One cannot argue that objects called black holes do not exist, regardless of how they are named. The term zero point field is a good one, a region into which matter disappears. The understanding…

http://cfpa.berkeley.edu/BHfaq.html Black Holes FAQ (Frequently Asked Questions) List by Ted Bunn What is a black hole? How big is a black hole? What would happen to me if I fell into a black hole? My friend Penelope is sitting still at a safe distance, watching me fall into the black hole. What does she see? If a black hole existed…

http://imagine.gsfc.nasa.gov/docs/ask_astro/black_holes.html Ask a High-Energy Astronomer: Library of Past Questions Black Holes Other Web sites for additional and related information on this topic are listed at the bottom of this page. Questions on ….. Evidence for Black Holes Who was the first person to discover a black hole and what was…

http://www.ncsa.uiuc.edu/SCMS/DigLib/text/astro/Colliding-Black-Holes-Seidel3.html.parsed.bak Black Hole Collision: holes initially close – Gravitational waves emitted by a large black hole formed from the collision of two smaller holes, shown at t=27M. – Gravitational waves emitted by a large black hole formed from the collision of two smaller holes, shown at t=39M. – Gravitational…

http://www.ncsa.uiuc.edu/Pubs/access/92.2/92.2.BlackHole.html Black hole studies to verify Einstein’s theory by Randall Graham, Science Writer Recent government approval to fund construction of two Laser Interferometric Gravi-tational Wave Observatories (LIGOs) has increased the urgency with which NCSA research scientist Ed Seidel and his NCSA colleagues…

http://library.advanced.org/10148/faq.html Black Holes FAQ Questions Page Click on a question to go to its answer. What is a black hole? Wouldn’t a black hole up everything in the universe? How are black holes created? Can only stars become black holes, or could planets and other things become black…

http://image.gsfc.nasa.gov/poetry/ask/abholes.html Black Holes, White Holes, Worm Holes How can black holes ever capture anything since 2-body capture is dynamically forbidden? Can nuclear fusion happen near a black hole? How do astronomers really prove that black holes exist when they are just theoretical ideas? Can a star clog a black hole that…

http://antwrp.gsfc.nasa.gov/apod/lib/bh_faq.html Black Hole FAQs: Frequently Asked Questions Text written and copyrighted by Robert J. Nemiroff in 1995 who is solely responsible for its content. Back to RJN’s Movie Page on Black Holes and Neutron Stars. All questions are graded by level. Levels include: beginner, understandable to those who…

http://www.ncsa.uiuc.edu/SCMS/DigLib/text/astro/Colliding-Black-Holes-Seidel7.html.parsed.bak Waveforms from the Black Hole Collision: holes initially farther still – Waveforms superimposed on black hole collision at time t=12M – Waveforms superimposed on black hole collision at time t=39M – Waveforms superimposed on black hole collision at time t=100M…

http://www.nasa.gov/private.html NASA is deeply committed to spreading the unique knowledge that flows from its aeronautics and space research…. Read NASA Administrator Daniel S. Goldin’s welcome letter, bio and speeches. Welcome to NASA Web Do you dream of exploring space or working for NASA? If so, avoid black holes and…

http://www.pas.rochester.edu/~dmw/ast102/Lect_14/tsld001.htm Today in Astronomy 102: energy and black holes Jet and disk around a supermassive black hole in the center of the elliptical galaxy M87, as seen by the Hubble Space Telescope (NASA/STScI). Einstein’s mass-energy equivalence (E = mc2). Generation of energy from black holes. The search for black…

http://electron4.phys.utk.edu/astronomy/black.htm Black Holes Loosely speaking, a black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull. Black Holes and Neutron Stars Many people think black holes…

http://astro.gmu.edu/classes/a10695/notes/l15/l15.html Lecture 15: Black Holes and Neutron Stars- Cosmological Snark Hunts In the Midst of the Word he was trying to say, In the Midst of his laughter and glee, He suddenly and silently vanished away…

http://www.eclipse.net/~cmmiller/BH/blkmain.html INTRODUCTIONBLACK HOLESNEUTRON STARS AND PULSARSHOW THEY FORMHOW WE DETECT THEMBIBLIOGRAPHYQ A PAGESRELATED LINKSPRINTOUTBOOKS Many people think black holes continually suck in everything like great big cosmic bathtub drains. And what the heck are neutron stars? Understanding the nature of black…

http://imagine.gsfc.nasa.gov/docs/ask_astro/ask_an_astronomer.html Ask a High-Energy Astronomer! Lots of people have all sorts of questions about things such as black holes, quasars, dark matter, and so much more. But they don’t ask because they don’t know who to ask or don’t want to look silly or aren’t sure how to ask. Now you can ask a question about high…

http://vishnu.nirvana.phys.psu.edu/online/Html/Conferences/Mazatlan/Abhay/s51.html Abhay Ashtekar – Mazatlan Lectures on Black Holes (Slide 51 of 51…

http://www.yale.edu/astro120/links_quasars.html Quasars, Active Galactic Nuclei, and Black Holes The High Energy Astrophysics Learning Center An excellent site brought to you by NASA’s Laboratory for High Energy Astrophysics. Pictures and explanations on Black Holes, Dark Matter, AGN, and the instruments we use to study them. The Black Holes…

http://sao-www.harvard.edu/blackhole/index.html ASTRONOMERS CLOSING IN ON BLACK HOLES Toronto, Ont.— Measurements made with the Japanese-NASA satellite ASCA and other satellites imply the reality of the “event horizon,” the one-way membrane around black holes that is predicted by Einstein’s theory of relativity. A report presented at the…

http://www.ncsa.uiuc.edu/SCMS/DigLib/text/astro/Rotating-Black-Holes-Seidel.html.parsed.bak Rotating Black holes Discipline Astronomy, Astrophysics Date 4/26/94 Version 1 Main Use Science Presentation Researchers Seidel, Edward Brandt, Steven NCSA Visualization Bajuk, Mark NCSA Other Producers Software Wavefront Technologies Inhouse Visualization Software…

http://library.advanced.org/10148/long8.html Kinds of Black Holes Rotating Black Holes In 1963 the New Zealander Roy Kerr (see photo on right) figured out how to describe rotating black holes. These Kerr black holes rotate at a normal speed. Their size and shape depend only on their mass and how quickly they are rotating…

http://www-tap.scphys.kyoto-u.ac.jp/~bh/yamaconf.html XLIXth Yamada Conference ‘Black Holes and High Energy Astrophysics’ Date: April 7(Tue) to 10 (Fri), 1998 Location: Kyodai-Kaikan (map1, map2, , map in Japanese), 15-9, Yoshida-Kawara-machi, Sakyo, Kyoto(map), Japan Fields which the meeting covers include: Classical and Quantum theory of…

http://wonka.physics.ncsu.edu/~blondin/Blackhole/history.html What is a black hole? Laplace (1795) noted that a consequence of Newtonian gravity and Newton’s corpuscular theory of light was that light could not escape from an object of sufficiently large mass and small radius. Einstien (1915) publishes his theory of general relativity. Schwarzschild (1916…

http://fy.chalmers.se/~marek/Courses/Holes.html Black Holes. Undergraduate Course M. Abramowicz Marek A. Abramowicz: Black Holes Undergraduate Course at CTH/GU 1996 Course 1998 Course M.A. Abramowicz Homepage Other M.Abramowicz’s recent courses…

http://imagine.gsfc.nasa.gov/docs/science/know_l1/black_holes.html Introduction to Black Holes Black holes are objects so dense that not even light can escape their gravity, and since nothing can travel faster than light, nothing can escape from inside a black hole. On the other hand, a black hole exerts the same force on something far away from it as…

http://www.damtp.cam.ac.uk/user/gr/public/bh_home.html BLACK HOLES Introduction to black holes Observational evidence for black holes Black holes and critical phenomena [Back][Cosmology][Cosmic strings][Inflation][Quantum gravity][Home][Next…

http://antwrp.gsfc.nasa.gov/apod/ap970114.html Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. January 14, 1997 Black Holes in Galactic Centers Credit: D. Richstone (U. Mich) et al., HST…

http://www.itp.ucsb.edu/online/bh_teach INSTITUTE FOR THEORETICAL PHYSICS ITP Teachers Educational Forum on Black Holes: Fact and Fiction Saturday, February 6, 1999 Coordinators: O. Blaes. R. Blandford, D. Eardley and J.P. Lasota Schedule Time:Speaker:Title: 8:00 amRegistrationITP Lobby 9:00 amDavid Gross Omer BlaesWelcome to ITP Welcome…

http://www.lifeintheuniverse.com/blackhol.html A black hole Black holes are the result of stellar collapses and the intense gravitational fields generated around them. A star that is sufficiently massive and compact would have such a strong gravitational field that light could not escape: any light emitted from the…

http://www.maths.cam.ac.uk/postgrad/courses/descriptions/node96.html Next: Advanced Cosmology – Early Up: Relativity and Gravitation Previous: General Relativity (M24) Black Holes (L24) Dr M.J. Perry This course aims to explore the fundamental physics of black holes. Black holes are regions of spacetime that are removed from causal contact with the rest of the…

http://www.earthsky.com/1996/es960913.html When Black Holes Meet Black holes are extremely dense objects that have such powerful gravitational fields that nothing, even light, can escape. We talk about what happens when two black holes meet — after this on Earth and Sky.Friday, September 13, 1996DB: This is Earth and Sky, with a question…

http://astro.gmu.edu/classes/a10594/notes/l12/l12.html Lecture 12: The Astronomers- Search for Black Holes there is something about studying the universe… John Conway, The Astronomers-Search for Black Holes Navigation Options You may : Go to the…

http://dept.physics.upenn.edu/~myers/ASTR001/L32.html Lecture 32 – Black Holes and Relativity (4/5/96) Seeds: Chapter 11 Black Holes If you compress enough mass within a small enough radius, the escape velocity will exceed the speed of light. Because light can never escape, such an object is called a black hole. What goes in, never comes out…

http://www.ncsa.uiuc.edu/SCMS/DigLib/text/astro/Rotating-Black-Holes-Seidel.html.bak Rotating Black holes Discipline Astronomy, Astrophysics Date 4/26/94 Version 1 Main Use Science Presentation Researchers Seidel, Edward Brandt, Steven NCSA Visualization Bajuk, Mark NCSA Other Producers Software Wavefront Technologies Inhouse…

http://imagine.gsfc.nasa.gov/docs/science/quiz_l1/black_holes_quiz.html Black Holes Quiz What would change if our Sun was suddenly replaced by a black hole of the same mass? [A] Earth would be sucked into the black hole [B] The planets would no longer have the same orbit [C] Only the temperature on Earth would change Scientists only…

http://imagine.gsfc.nasa.gov/docs/teachers/blackholes/blackholes.html Black Holes Black Holes (K-8) (On-line) The Anatomy of Black Holes (9-12) (On-line) Download a pdf version. Download a pdf version. If you would like to order these materials, please use our order form…

http://xrtpub.harvard.edu/xray_sources/black_holes.html Black Holes Can astronomers see a black hole? Not directly. The only way to find one is by observing the energy released by matter that is falling toward the black hole. (The image to the right shows a schematic of a black hole with accretion disk.) A black hole is formed when a collapsed star…

http://www.astro.ku.dk/~peter/RelViz/bh/bh.html Peter Diener’s WWW-exhibition Description and visualization of particle trajectories near black holes This WWW-exhibition will try to describe the strange kinds of motions particles can perform in the strongly relativistic regime near a black hole. Table of contents Short introduction to general…

http://library.advanced.org/10148/long10.html Kinds of Black Holes Mini Black Holes In 1971 Stephen Hawking suggested that there might be mini black holes created by the Big Bang explosion (see picture on right), when our universe was created. The dense, incredibly violent turbulence that followed the…

http://www.math.fsu.edu/~aluffi/archive/paper18.abs.html Axisymmetric galaxy models with central black holes, with an application to M32. E.E. Qian, P.T. de Zeeuw, R.P. van der Marel, C. Hunter The contour integral method of Hunter \ Qian is applied to axisymmetric galaxy models in which the distribution function (DF) is of the form $f=f(E, L_z…

http://www.astro.ku.dk/~cramer/RelViz/text/exhib1/exhib1.html General relativity and Black Holes. How is the geometry around a Black Hole? A Black Hole is one of the most fascinating objects in the universe, and it can be understood on basis of Einstein’s general theory of relativity. In the following pages, you will get an impression of how the curvature…

http://starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/black_holes.html Black Holes Guess what? Some scientists believe that there is a black hole here in our very own Milky Way. Black holes are extremely compact space objects that were once massive stars which collapsed inward due to the force of their own gravity. Consequently, black holes…

http://monet.unibas.ch/~schatzer/ytg.html There Are No Black Holes! An introduction to the Yilmaz Theory of Gravity H#252seyin Yilmaz discovered an alternative theory of gravitation which surmounts some of the defects of general relativity [1-5]. Remarkably, the solutions of the field equations know neither space-time singularities nor…

http://www.ncsa.uiuc.edu/Cyberia/NumRel/3Devolution.html Expo/Science Industry/Spacetime Wrinkles | Back | Map | Theater | 3-D Colliding Black Holes Horizon and Gravitational Wave Evolution The head-on collision of two equal mass black holes has been computed in 3D and displayed here. The horizons are shown as the green surfaces which fall together…

http://www.intothecosmos.com/faq/index.html by Ted Bunn Back to the Black Holes Homepage Visit the Center for Particle Astrophysics Homepage What is a black hole? How big is a black hole? What would happen to me if I fell into a black hole? My friend Penelope is…

http://library.advanced.org/12523/article2.html A Closer Look at Black Holes When a heavy neutron star collapses, the gravitational force of attraction on its surface raises up to a point where the escape velocity is as high as light speed (approx. 300,000 km/sec) itself. At that point nothing, not even light, can escape from the collapsed star…

http://www.hoise.com/primeur/PL/97/Mannheim2/UH-PL-06-97-7.html Navigation Back to Table of Contents #169 The HOISe-NM Consortium 1997 mail the editor Getting into colliding black holes and neutron stars Mannheim, 21-6-97 Eighty years ago, Einstein developed the theory of general relativity. Now the largest parallel…

http://www.intothecosmos.com/ This page uses frames, but your browser doesn’t support them. Try downloading either Netscape 2.0 and up or Internet Explorer 3.0 and up. If you had a browser that supported frames here is what you’d see: black, black holes, hole, frayed, quasars, gravitational, colliding, hawking…

http://www.intothecosmos.com/blackholes.html Take a look a some of the most spectacular images of Black Holes in the entire Universe. There is no escape… The Event Horizon’s got us… But I can’t see it… What is it?!!! Black…

http://www.lang.esys.tsukuba.ac.jp/~yaman/work/pages/page111016531186.html [2-4]Multi black holes in de Sitter universe The K.T. solution In Phy. Rev. D, Vol.47, pp.5370-5375 (1993), an exact solution representing multi black holes is given as follows. ds^2 = -(1/F^2)dt^2+(F*G)^2(dx^2+dy^2+dz^2) F = 1+Sigma (Mi/Ri)/G, G = exp(H*t), Ri = sqrt((x-xi)^2+(y-yi)^2+(z…

http://www.uccs.edu/~cwetheri/Humor/BHgod.html – No one has been killed for not believing in black holes – Nobody claims that there is only *one* *true* black hole. – Books written about black holes are factual. – Black holes are…

http://www.pas.rochester.edu/~dmw/ast102/Lect_22/tsld001.htm Today in Astronomy 102: the insides of black holes False-color VLA image of the radio galaxy Cygnus A (Rick Perley, NRAO). Physics and metaphysics, positivism and idealism: should we consider the interior of a black hole to be real? Assuming that we can: physics inside the event horizon, and the…

http://www.odyssey.on.ca/~raymond.mills/black.htm var code = ‘ ‘ document.write(code) Black Holes Space Exploration Space Station Mars: The Red Planet Galileo Mission Cassini Mission Space Telescopes Earth’s Moon General Space Featured Links Bookstore Space News / Mystery News 11/28/99 FOX: Matter ‘Chokes’ Black Holes…

http://theory.uwinnipeg.ca/users/gabor/black_holes/index.html Black Holes Gabor Kunstatter Physics Department, University of Winnipeg The following is the content of a lecture given as part of the University of Winnipeg Faculty Club Dialogue Series, October, 1998. Table of Contents Select a slide or start at the beginning. Black Holes What is Gravity? What…

http://euclid.tp.ph.ic.ac.uk/~hfj/msc/bh/bh.html Syllabus for Black Holes Course Lecturer: Fay Dowker, Imperial College Black holes are some of the most interesting and important objects in theoretical physics. In particular, it is likely that the development of a theory of quantum gravity will be guided by such questions as “what are the…

http://hyperion.advanced.org/10148/long10.html Kinds of Black Holes Mini Black Holes In 1971 Stephen Hawking suggested that there might be mini black holes created by the Big Bang explosion (see picture on right), when our universe was created. The dense, incredibly violent turbulence that followed the…

http://library.advanced.org/12676/ Welcome to the Dark Side! Here, you will learn of the one of the greatest mysteries in the cosmos you will even learn of the theories of its existence and formation. So sit back and brace yourself for the trip though time! Part 1 – Introduction Introduction to a Black Hole Some Historic Trivia…

http://msowww.anu.edu.au/~pfrancis/pink/press_release.txt Embargoed until 11am, Thursday 6th May SOME BLACK HOLES ARE PINK A group of Australian astronomers have found that some black holes are bright pink! Black holes have captured the imagination of the public over the years with some popular depictions in science fiction movies. They have such intense…

http://www.windows.umich.edu/cgi-bin/redirect.cgi/the_universe/BH.html Black Holes Black Holes are theoretical objects. A black hole is an object which has such high gravitational pull that not even light can escape. Hence it is black. Which makes it pretty hard to observe directly. Black Holes may form as the result of the collapse of a very massive star at its…

http://www.badastronomy.com/mad/1998/blackhole_query.html Black Holes and Such…

http://tqd.advanced.org/10148/long7.html Kinds of Black Holes Non-Rotating Black Holes In 1967 the Canadian scientist Werner Israel showed that, according to general relativity, non-rotating black holes must be simple. They are perfectly spherical, their size depends only on their mass, and only two black holes with the same…

http://www.anu.edu.au/pad/releases99/pinkholes.html Melbourne – Embargoed until 11am, Thursday 6th May ANU researcher finds some black holes are pink A group of Australian astronomers have found that some black holes are bright pink! Black holes have captured the imagination of the public over the years with some popular depictions in science…

http://tqd.advanced.org/10148/bibliog.html Begelman, Mitchell and Rees, Martin. Gravity’s Fatal Attraction:Black Holes in the Universe. New York:Scientific American Library, 1996. Bernstein, Jeremy. The Reluctant Father of Black Holes. Scientific American. June 1996. Pages 80-85. Golden, Frederic. …

http://starchild.gsfc.nasa.gov/docs/StarChild/shadow/universe_level2/black_holes.html Black Holes Guess what? Some scientists believe that there is a black hole here in our very own Milky Way. Black holes are extremely compact space objects that were once massive stars which collapsed inward due to the force of their own gravity. Consequently, black holes…

http://stafla.dlis.state.fl.us/MARION/AAS-2690 Quasars, pulsars, and black holes DLC DLC FBA Title: Quasars, pulsars, and black holes / Frederic Golden. Author: Golden, Frederic. Published: New York : Scribner, c1976. Subject: Stars Interstellar hydrogen Material: xv, 205 p. : ill. 22 cm…

http://www.america-alfresco.com/explore/night/bigsky.html About Black Holes, Quasars, And Super Novas Looking out into the sky on a clear night, it seems to be crowded with thousands of stars. Actually there are billions of stars in the Universe, but they are separated by vast empty distances. Out in that vastness of space are areas known as…

http://www.beavton.k12.or.us/Vose/kidopedia/holes.html Black Holes The first person to develop the idea of black holes was the French mathematician Pierre Simon de Laplace. Laplace agreed with Isaac Newton that light is made up of particles. He theorized that if enough mass were added to a star, the gravitational force would become so great that its…

http://www.damtp.cam.ac.uk/user/gr/public/bh_hawk.html Black Holes and Quantum Gravity Why bother? Black holes arise in general relativity, a classical theory of gravity. However, we need to include quantum effects to understand black holes properly. Roger Penrose and Stephen Hawking showed thirty years ago that, according to general relativity, any…

http://blue.hallym.ac.kr/Edu/GR/Movies/Movie5/ 3D Black Holes QT (1118K) We have been evolving spherically symmetric black holes with our 3D relativity code. Although spherically symmetric black holes are 1D objects, we use this problem as a test problem for our 3D code. The function shown in this movie is g_{rr}, which is a measure of the…

http://www.documentaryvideos.net/078197.htm The Astronomers: Searching For Black Holes (visit Movies Unlimited for this title on video) Young astronomer John Conway links radio telescopes across two continents to look into deep space for a monstrous black hole that has been swallowing millions of stars. 60 min. Click here to find: The…

http://www.ncsa.uiuc.edu/Cyberia/NumRel/BlackHoleEvolution.html Expo/Science Industry/Spacetime Wrinkles | Forward | Back | Up | Map | Glossary | Information | When a Black Hole Forms What happens to a black hole after it forms? Does it vibrate? Radiate? Lose mass? Grow? Shrink? Partial solutions of the Einstein equations point to two possible outcomes: A…

http://www.intothecosmos.com/blackholes/ Black Holes remain one of the most mysterious objects in the Universe. Not only are Black Holes invisible to detection but physicists think that they are one of the few places in the Universe that the most fundamental laws of physics break-down…

http://library.advanced.org/25715/ Event Horizon n. the outer boundary of a black hole, a region of space where gravity is so powerful that not even light can escape– until now… Welcome to the Event Horizon, an educational web experience about black holes that will take you into the heart of the abyss from which nothing can…

http://webster.aip.org/inside_science/html/62.html Black HolesFebruary 12, 1997Run Time: 1:46 View Script Astronomers call black holes the ultimate victory of gravity over other forces of nature. Scientists are now discovering there are many more of these cosmic entities than previously thought…

http://image.gsfc.nasa.gov/poetry/sfair/q1603.html Can you suggest any science fair projects that have to do with black holes? Here’s one you might be interested in that has to do with black hole evaporation. Stephen Hawking discovered from theoretical considerations back in the mid 1970’s that black holes evaporate due to a quantum mechanical…

http://www.bridgewater.edu/~rbowman/phys105/p8/ Black Holes The thought of Black Holes has always interested me from the basic idea to the complex theories behind them. The basic idea behind black hole is that it was once a star with a mass of one and a 1/2 of our suns or lar ger that has collapsed to the smallest size it could. After that the…

http://wwwssl.msfc.nasa.gov/NEWHOME/headlines/ast13apr99_2.htm Space Science News home A New Class of Black Holes? Astronomers may have discovered a new type of middle-weight black hole in the centers of some galaxies. FROM A NASA HQ PRESS RELEASE Apr. 13, 1999: The field of black holes, formerly dominated by heavyweights…

http://www.trinityprep.org/mazzar/Universe/BlackHole/per1/index.htm Black Holes 1/31/99 Click here to start Table of Contents Black Holes PPT Slide Escape Velocities Black Holes PPT Slide Escape Velocity Many people when they think of Black Holes think of Science fiction movies…

http://www.physics.lsa.umich.edu/saturday/1998/black-holes/lecture-3/index.htm SATURDAY MORNING PHYSICS FALL 1998 BLACK HOLES LECTURE 3 By Manasse Mbonye 12/14/98 Click here to start Table of Contents PPT Slide PPT Slide PPT Slide PPT Slide Lecture III Summary PPT Slide Bald! Consequences of baldness PPT Slide Evidence of…

http://192.211.16.13/individuals/aitchisk/blackhole.htm Go here for an interim report. No supernova outbursts will occur when the collapse starts, nothing can stop it and in an amazingly short time we are left with a body which is so small but so massive that not even light can escape from it. In other words, we have a Black Hole…

http://www.physics.ucsb.edu/~jpierre/strings/bholes.htm SUPERSTRINGS! Black Holes The classical description of gravity known as General Relativity, contains solutions which are called black holes. There are many different kinds of black hole solutions but they share some common characteristics. The event horizon is a surface in spacetime which…

http://www.acs.oakland.edu/~eabyrnes/tis/blackholes.html Black Holes by C.B. Maldonado Imagine traveling through a black hole. What would happen? Would the speed of time change? Would you travel to another dimension? Unfortunately, scientists do not know this yet, but they do know a few things about black holes. Black holes are objects…

http://ispec.scibernet.com/news/space_time.html FIRST OBSERVATION OF SPACE-TIME DISTORTION BY BLACK HOLES Astronomers using NASA’s Rossi X-ray Timing Explorer (RXTE) spacecraft reported today that they have observed a black hole that is literally dragging space and time around itself as it rotates. This bizarre effect, called frame…

http://tqd.advanced.org/10148/long13.html Black Holes Ain’t So Black! English physicist Stephen Hawking has suggested that radiation might not only exist near the black hole, but that it might actually be leaking from the black hole itself. Can energy really leak from a black hole? It sounds impossible from all we…

http://www.black-holes.com/ frame dragging observed in black holes new confirmation of general relativity One of the main effects associated with black hole rotation is gravitational dragging, in that the rotating bh is supposed to pull objects around with it. This effect shows up as an imbalance in the amount of…

http://math.rutgers.edu/~arup/professional-links.html Mathematics/numerical analysis/General Relativity Here are links related to mathematics and numerical analysis. There are also some links to General relativity–particularly to black hole collisions and numerical relativity . MATHEMATICS (general) American…

http://www.usn.org/astronom/papers/hpsally.htm This is presented by Jennifer Minnen and Sally Al-Abdulla industrious seniors at University School of Nashville. Under the supervision of Mr. Bill Rodriguez, our physics teacher, we are attempting to provide a smattering of information on black holes. As beginners ourselves in the atronomical…

http://www.personal.psu.edu/users/j/a/jas459/ FUN WITH BLACK HOLES Hi. This is an extremely scientific website devoted to black holes and whatnot. It is for an Astronomy course at Penn State University, appropriately called Big Bang Universe. My…

http://spaceboy.nasda.go.jp/Note/Shikumi/E/shi101_blackhole_e.html Black holes Anything entering a black hole never gets out Gravity of a black hole is so great that even light trapped inside it can’t escape. When a star’s mass reaches over eight times that of the Sun, its final stage of evolution is a supernova. The outer layer of the star is blown off and the…

http://ars-www.uchicago.edu/relativity/ Black Holes and Relativistic Stars A Symposium in Honor of S. Chandrasekhar The University of Chicago A Symposium entitled Black Holes and Relativistic Stars will be held at the University of Chicago on the weekend of December 14 and 15, 1996. The Symposium is dedicated to the memory of S…

http://library.advanced.org/12676/strength.htm Limit to a Black Hole’s Strength A black hole has a horizon, which means a region from which you can’t escape. If you cross the horizon, you’re doomed to eventually hit the singularity. But as long as you stay outside of the horizon, you can avoid getting sucked in. In fact, to someone well…

http://physics.technion.ac.il/~lburko/conf.htm Workshop on The Internal Structure of Black Holes and Spacetime Singularities Technion — Israel Institute of Technology Haifa, June 29 — July 3, 1997 Preliminary Program Aim and Topics The workshop on The Internal Structure of Black Holes and Spacetime Singularities aims to bring…

http://www.astro.psu.edu/users/pablo/Papers/krivan.html Dynamics of Scalar Fields in the Background of Rotating Black Holes Krivan, W., Laguna, P. and Papadopoulos, P. Phys. Rev. D, 54, 4728 (1996) Abstract A numerical study of the evolution of a massless scalar field in the background of rotating black holes is presented. First, solutions to the… SFLink Advertisement real semi-real unreal in title only or everywhere at

http://zebu.uoregon.edu/~soper/StarDeath/blackhole.html 3 Msun. small size. There is evidence for the existence of such an object. The best case is an xray source called Cygnus X1. Cygnus X1 appears to be a black hole with a mass of about 7 Msun that is part of a binary system. The other star in the binary system is a B class supergiant star. Size…

http://cossc.gsfc.nasa.gov/gamma/new_win/nw10.html Probing Super-Massive Black Holes Active galactic nuclei and quasars fueled by accretion of matter onto massive black hole Gravitational energy released and converted to radiation – particularly X-rays – as infalling matter nears black hole X-rays produced nearest to event horizon Relative to other…

http://whyfiles.news.wisc.edu/052einstein/frame_drag3.html The five-minute guide to black holes Black holes are points in space that are extraordinarily dense. They apparently arise when the mass of a large star becomes compressed into a point smaller than an electron (we’re not making this up!). In those conditions, the gravity becomes so enormous…

http://192.211.16.13/individuals/aitchisk/finding.htm Since the very nature of black holes (light not being able to escape) makes them impossible to detect with conventional methods, how can we detect them or how do we even know they exist. Einstein’s general theory of relativity predicted the existence of black holes back in…

http://www.cgtp.duke.edu/~drm/popular.html I am aware of the following popular articles related to my recent work with Greene and Strominger on black holes, string theory and elementary particles: UC Santa Barbara physicist advances the `string theory’, K.C. Cole, Los Angeles Times, 13 June 1995 How black holes may get string theory out of…

http://starchild.gsfc.nasa.gov/docs/StarChild/universe_level1/black_holes.html Black Holes Some scientists believe that there is a black hole in our very own Milky Way. Black holes were once massive stars that used up all their fuel. As they died out, they collapsed inward due to the pull of their own gravity. The gravity of a black hole is so…

http://www.ssl.msfc.nasa.gov/newhome/headlines/ast13apr99_2.htm Space Science News home A New Class of Black Holes? Astronomers may have discovered a new type of middle-weight black hole in the centers of some galaxies. FROM A NASA HQ PRESS RELEASE Apr. 13, 1999: The field of black holes, formerly dominated by heavyweights…

http://www.xs4all.ch/~johanw/PhysFAQ/black_fast.html [Relativity FAQ] – [Copyright] original by Philip Gibbs 5-July-1996 If you go too fast do you become a black hole? According to relativity the following are true facts: As an object approaches the speed of light it’s kinetic energy increases without limit. Energy is related to mass by the…

http://tqd.advanced.org/3641/scientists.html Contributions of Scientists to the Study of Black Holes Scientists ahead of their times… Subrahmanyan Chandrasekhar (1910- ) Indian-born American astrophysicist Nobel laureate. Developed the Chandrasekhar Limit, which refers to the maximum possible mass of a stable cold star, above which it…

http://www.theorie.physik.uni-muenchen.de/ Theoretical Physics at the University of Munich The basics Where to find us Theresienstraszlige 37 80333 Muumlnchen The research areas and their groups Cosmology The group of Professor Mukhanov studies the physics of black holes and the evolution of the Early Universe in inflationary…

http://www.astro.soton.ac.uk/~nam97/plenary.html NAM97 — Plenary Sessions NAM97 Plenary SessionsLecture Theatre A We are pleased to announce that the plenary lectures at NAM97 will be: Tuesday, 8th April, 9:30AM Supermassive Black Holes and Active Galaxies Professor Sir Martin Rees Wednesday, 9th April, 9:00AM Stellar Black Holes Dr…

http://fermi.phys.ualberta.ca/~frolov/blackhole/register.html BLACK HOLES: THEORY AND MATHEMATICAL ASPECTS Online Registration Application A plain text version of the registration application is available if you are viewing this offline or are using a browser that does not support forms. Fill it in and send it together with your payment to…

http://www.astro.psu.edu/users/pablo/Papers/pisa.html Black Hole Collisions: A computational Grand Challenge P. Laguna in Proceedings International Conference on Gravitational Waves: Sources and Detectors, Pisa, Italy (1996) Abstract The coalescence of binary black holes epitomizes the ultimate test of Einstein’s theory of gravity and has…

http://www.astro.psu.edu/users/pablo/Papers/tidal2.html Tidal Disruptions by Supermassive Black Holes: Hydrodynamic Evolution of Stars on a Schwarzschild Background P. Laguna, W.A. Miller, W.H. Zurek, and M.B. Davies Ap. J., 410, L83 (1993). Abstract We present a three-dimensional numerical study of tidal disruption of a main-sequence star ($M_\star…

http://fy.chalmers.se/~marek/Courses/Courses-1996/Holes-left.html BLACK HOLES 1996 Intermediate Course General information Contents of the course Program of the course Students’ essays. Exam Most useful books. Some useful links Other astronomy courses M. Abramowicz homepage CONSULTATION TIMES: After each lecture, or anytime on Mondays and Fridays…

http://osse-www.nrl.navy.mil/harmon.txt OBSERVATIONAL STATUS OF THE BLACK HOLE BINARIES: WHAT HIGH ENERGY ALL-SKY MONITORS CAN REVEAL Alan Harmon, MSFC Our current picture of black hole binary systems is based on a variety of observations and theoretical models. The aperiodic nature of the phenomena associated with these…

http://astron.berkeley.edu/~bobf/surf.purity/surf.purity.html Next: About this document In 1976, Stephen Hawking proposed that black holes could act as sinks of information, since it could be possible that a hole would evaporate into a nearly thermal bath of radiation which would not depend on the details of the formation of the hole. Such a proposal…

http://www.sdc.asi.it/abstracts/140.html TOO of a black hole transient in outburst Proposal number : 140 Overvation program : CP Subject category : Compact_Galactic Proposal type : TOO Principal Investigator : Belloni, Tomaso PI Institute : University of…

http://web.physics.twsu.edu/alex/bh.htm Black Holes the eclipses of the x-ray binary cygnus x-1 allow us to determine its A distance B mass C age D temperature a black hole is an object A from which nothing can escape B whose escape speed is greater than the speed of light C within which…

http://www.eclipse.net/~cmmiller/BH/blkawd.html Black Holes and Neutron Stars Awards and Banners…

http://www.discovery.com/diginets/smartviewer/episode/23/19792000.html Science Mysteries Black Holes: The Ultimate Abyss The world’s most respected physicists explore the most fascinating non-place in the universe — the black hole. Stephen Hawking, John Wheeler, and others attest to what is known and unknown. Air Time(s) Eastern/Pacific Time: DSC – 27 Mar…

http://www.changesurfer.com/eventhorizon/ngc917.html Event Horizons, Black Holes, Radio Emissions and Singularities Black Hole A black hole is a region of spacetime enclosed by an event horizon. A black hole is formed by the collapse of massive objects. If the heat and pressure supplied by the fusion of the material within the star is less than the…

http://www.fourmilab.ch/gravitation/orbits/ Orbits in Strongly Curved Spacetime Sorry–it appears your browser doesn’t understand Java applets. Introduction The display above shows, from three different physical perspectives, the orbit of a low-mass test particle, the small red circle, around a non-rotating black hole (represented by a grey…

http://www.damtp.cam.ac.uk/user/gr/public/bh_intro.html Introduction to Black Holes What is a black hole? A black hole is a region of spacetime from which nothing can escape, even light. To see why this happens, imagine throwing a tennis ball into the air. The harder you throw the tennis ball, the faster it is travelling when it leaves your hand and…

http://odyssey.on.ca/~raymond.mills/black.htm var code = ‘ ‘ document.write(code) Black Holes Space Exploration Space Station Mars: The Red Planet Galileo Mission Cassini Mission Space Telescopes Earth’s Moon General Space Featured Links Bookstore Space News / Mystery News 11/28/99 FOX: Matter ‘Chokes’ Black Holes…

http://home.pacbell.net/bbowen/marbles.htm Is it possible to make sub-steller mass black holes without intense gravitational pressures or compression? You betcha! There is a way to make planetary mass black holes. This method does not rely on high pressures to compress mass into small volumes. All you need is…

http://www.astro.ku.dk/~cramer/RelViz/text/exhib4/exhib4.html Kerr’s rotating Black Holes. Let’s generalise some of the formulas used in the static Schwarzschild case, to the case of rotating Black Holes. The Kerr metric is written in Boyer-Lindquist coordinates: where the coordinate functions are given (with G=c=1): the specific angular momentum is…

http://www.astro.princeton.edu/~library/preprints/pop563.abs MASSIVE BLACK HOLES AND LIGHT ELEMENT NUCLEOSYNTHESIS IN A BARYONIC UNIVERSE Nickolay Y. Gnedin, Jeremiah P. Ostriker Princeton University Observatory, Princeton, NJ 08540 Martin J. Rees Institute of Astronomy, Cambridge CB3 OHA…

http://godel.ph.utexas.edu/Center/GC/page1.html Binary Black Hole Grand Challenge The event horizon from the head-on collision of two black holes. The vertical axis is the time axis and the yellow arrows denote the directions of the spacial coordinates. The black holes were formed from the collapse of pressureless dust. The 3D spiraling…

http://tqd.advanced.org/3641/history.html The History of Black Holes 1687 Newton publishes Principia in which the concepts of absolute space and time, as well as the laws of motion and gravity are formulated. 1783 Michell publishes the concept of a Newtonian black hole using Newton’s laws of motion, gravity and light. Light is seen as…

http://theory.uwinnipeg.ca/mod_tech/node61.html Next: Questions Up: Gravity Previous: Gravity as Curved Space: #160#160 Black Holes Einstein’s special theory of relativity states, however, that nothing can travel faster than the speed of light, which is: c = 3 x 108m/s If a star, for exle, collapses beyond some critical radius…

http://www.alcyone.com/max/writing/essays/black-hole-evaporation.html Black hole evaporation 30Es3 Essays A brief analysis of the mathematical results of Hawking radiation. Black hole evaporation. The Hawking temperature T of a Schwarzschild (nonrotating, uncharged) black hole with mass m is given by the equation (in geometrized units) [reference 1] T = hbar/(8 pi k…

http://math1.uibk.ac.at/~werner/bh/ Simulation of a Black Hole by Raytracing This information has also been published in F.W.Hehl, R.A.Puntigam, H.Ruder (Eds.) Relativity and Scientific Computing Computer Algebra, Numerics, Visualization ISBN 3-540-60361-1 Springer Verlag Berlin Heidelberg New York Newtonian Simulation (186KB…

http://www.sciam.com/askexpert/astronomy/index.html What causes a meteor shower? Why is the night sky dark? If comets melt, why do they seem to last for long periods of time? How fast is the earth moving? If light cannot escape the gravitational pull of black holes, how is it that scientists have detected plumes of radiation coming from them? My…

http://www.ahuimanu.k12.hi.us/tqjr99/Stars/black_holes.htm Black Holes Little is known about black holes, because they are too dangerous to study up close. Although we know very little about black holes we do know a few facts. Black holes are made up of densely packed material, sucked in by the immense force of gravity. We know how black holes are formed…

http://library.advanced.org/12676/intro.htm An Introduction to Black Holes What is a Black Hole? A black hole is a region of space that has so much mass concentrated in it that there is no way for any nearby objects to escape its gravitational pull. Since our best theory of gravity at the moment is Einstein’s general theory of relativity…

http://www.sciam.com/0796issue/0796hawking.html The Nature ofSpace and Time Two relativists present their distinctive views on the universe, its evolution and the impact of quantum theory by Stephen W. Hawking and Roger Penrose STEPHEN HAWKING ON… quantum black holes quantum cosmology physics and reality ROGER PENROSE ON… quantum theory…

http://www.ess.sunysb.edu/~simswg/siswg/node72.html Next: Added Capabilities with SIM: Up: Three Candidate Imaging Programs Previous: Young Stellar Objects Black Hole Candidates in Virgo Cluster Galaxies: A Unique Opportunity The combination of HST/WFPC2 images and HST/FOS spectra has allowed the successful detection of a M and M…

http://www.astro.wisc.edu/~varda/Astro_199.html ASTRONOMY 199 PHYSICS 199 Special offering Dear prospective student, Astro/Phys 199, Directed Study–Black Holes (Astro/Phys 199 is short for Astronomy U188-199/Physics U754-199) is a new, limited-enrollment, University of Wisconsin-Extension Independent Learning E…

http://sciencenet.oit.net/database/Physics/Lists/blackholes.html Physics Questions Number Question Level p00037d If light can’t escape from black holes why is it that we can see X-ray and infra-red radiation signals ? – p00113d How do gravitons escape from black holes…

http://nrmedia.com/catalog/blackholes.htm Black Holes Join us for the most dazzling detective story in the history of science. Black Holes features mesmerizing photography, computer animation, and a cast of intrepid cosmic…

http://houck.salkeiz.k12.or.us/houck.website/student.pages/Science.Web.Pages/stephan.rose.science/home.htm BlackHolesBlack holes are objects in space with intense gravitational pull. The gravitational pull is so great that not even light can escape. Since light cannot escape we can not see a black hole. If we cannot see a black hole, how do we know it’s there? Black holes sometimes have a companion star…

http://ajanta.sci.ccny.cuny.edu/~jupiter/pub/sciinfo/blackholes.html A Brief Definition of a Black Hole When an enormous amount of mass is concentrated in a small region of space, spacetime becomes so highly curved that, in essence, it forms an inescapable trap, or black hole. Once something enters a black hole, it can never get…

http://gopher.udel.edu/mvb/PS146htm/146nobh.html Quarks, Gluons, and the Big Bang PHYS146 Maurice Barnhill Class Notes VI. Black Holes and Quasars Next section Previous section End of section Index of notes Syllabus Announcements Outline of Hawking Chapter 6 Black Holes History of the…

http://heimdall.phys.uidaho.edu/~pbickers/Courses/310/Notes/book/node242.html Next: Review Up: Curved Spacetime Previous: The binary pulsar PSR Black holes Black holes are a further prediction of Einstein’s theory for which there seems to be some known candidates. A black hole is basically an object so dense, even denser than a neutron star, that spacetime around it is so…

http://www.cloudccc.cc.ks.us/dept/science/AstLec31/tsld031.htm Black Holes If the core of a star is so massive that even degenerate neutron pressure cannot slow the gravitational collapse, an even more bizarre fate awaits the death of the star. The core does not stop collapsing, but instead becomes a point of infinite density. When this occurs, the…

http://wonka.physics.ncsu.edu/~blondin/Blackhole/title.html HOW DO WE SEE BLACK HOLES ? John Blondin Theoretical Astrophysics Department of Physics North Carolina State University…

http://focus.aps.org/v1/st3.html Boosted Three-Dimensional Black-Hole Evolutions with Singularity Excision G. B. Cook et al. (Binary Black Hole Grand Challenge Alliance) Phys. Rev. Lett. 80, 2512 (March 23, 1998) Moving a Black Hole 25 March 1998 According to general relativity, a large accelerating mass produces…

http://aleh.herzlia.k12.il/astrophysics/b_hole.html Black Holes Return toALCA main page There are many popular myths concerning black holes, many of them perpetuated by Hollywood. Television and movies have portrayed them as time-traveling tunnels to another dimension, cosmic vacuum cleaners sucking up everything in sight, and so on. It…

http://www.montshire.net/minute/mm981214.html Montshire Minute: Black Holes Monday Imagine you’re skippering a research mission on an interstellar starship. On the navigation screen you detect something very weird up ahead. It appears to be a big black blob, with streams of matter being pulled in it. It is strangely beautiful…

http://www.weburbia.com/physics/universe.html [Relativity FAQ] – [Copyright] Updated by PEG 27 June 1997 Original by Philip Gibbs, 17 March 1997 Is the big bang a black hole? This question can be made into several more specific questions with different answers. Why did the universe not collapse and form a black hole at the beginning…

http://tqjunior.advanced.org/3645/blackholes.html Photo above taken by the Hubble Telescope. This page is devoted to the wonderful world of black holes. Do they exist? If so, where are they? Read on and you’re guaranteed to find out the answer. What is a Black…

http://ugrad.phys.unsw.edu.au/physoc/physics_faq/black_fast.html [Relativity FAQ] – [Copyright] original by Philip Gibbs 5-July-1996 If you go too fast do you become a black hole? According to relativity the following are true facts: As an object approaches the speed of light it’s kinetic energy increases without limit. Energy is related to mass by the…

http://www.infozine.com/z9905/e-nasa.shtml The Kansas City Health Environment infoZine – Email This Article Astronomers Discover ‘Middleweight’ Black Holes The field of black holes, formerly dominated by heavyweights packing the gravitational punch of a billion Suns and lightweights just a few times heavier…

http://universe.gsfc.nasa.gov/SEU/news/1998/98-002.html Old Faithful Black Hole Ejects Mass Equal to Asteroid NASA HQ RELEASE: 98-2 January 7, 1998 Scientists observing a disk of matter surrounding a black hole in our galaxy have discovered that the disk is periodically disrupted and hurled outward…

http://www.seds.org/hst/97-12.html BACKINDEXNEXT STIS Records A Black Hole’s Signature STIS RECORDS A BLACK HOLE’S SIGNATURE The colorful zigzag on the right is not the work of a flamboyant artist, but the signature of a supermassive black hole in the center of galaxy M84, discovered by Hubble Space Telescope…

http://www.cyberwest.com/v7scwst1.html Evidence for existence of black holes overwhelming March 11, 1996 The astrophysical evidence for black holes has become so overwhelming in recent years that astronomers now treat these once-fanciful objects as normal components of the universe, said a University of Colorado at Boulder professor…

http://www.badastronomy.com/mad/1998/bigcrunch.html Is it possible for a giant black hole to crush under it’s own gravity…

http://www.superstringtheory.com/blackh2.html Since the Hubble Space Telescope was launched in 1990, there have been many observations of what are believed to be black holes, including the photograph below of a suspected black hole in the heart of the galaxy NGC 6251. But the subject of black holes began in theoretical physics, long before…

http://www.spaceviews.com/1998/01/15k.html Go Directly To: Home December 1 issue November 22 issue November 15 issue November 8 issue Sites of the Week Special Features: – Mars – The Moon – Leonids – John Glenn – Space Movies – Mir – Top Ten Stories of 1997 Subscribe Article Submissions Back Issues Awards Recognition Black Holes in…

http://physics.hallym.ac.kr/education/faq/black_fast.html [Relativity FAQ] original by Philip Gibbs 5-July-1996 If you go too fast do you become a black hole? According to relativity the following are true facts: As an object approaches the speed of light it’s kinetic energy increases without limit. Energy is related to mass by the formula E = m c^2. As…

http://www.newton.dep.anl.gov/newton/askasci/1993/physics/PHY77.HTM Ask A Scientist Physics Archive Index Key: PHY077 Author: Alex Botvinnik Subject: Is there a way to escape from black holes? Text: According to Steven Hawking from A Brief History…, when two black holes merge, they form one black hole greater than or equal to the sum of the…

http://www.flatoday.com/space/explore/releases/1998/n98002.htm FLORIDA TODAY Space Online Planet Earth’s best source for online space news For January 8, 1998 ‘Old Faithful’ black hole ejects mass equal to an asteroid NASA NEWS RELEASE: 98-2 Scientists observing a disk of matter surrounding a black hole in our galaxy have discovered that the disk is…

http://news3.news.wisc.edu/052einstein/frame_drag3.html The five-minute guide to black holes Black holes are points in space that are extraordinarily dense. They apparently arise when the mass of a large star becomes compressed into a point smaller than an electron (we’re not making this up!). In those conditions, the gravity becomes so enormous…

http://antwrp.gsfc.nasa.gov/htmltest/gifcity/bh_pub_faq.html Frequently Asked Questions (FAQs) on Black Holes to Internet newsgroup: sci.physics Answers posted by Matt McIrvin of Harvard University, last updated 02-FEB-1995. Text in this file is NOT copyrighted by RJN. Contents: 1. What is a black hole, really? 2. What happens to you if you fall in…

http://www.sciam.com/askexpert/astronomy/astronomy30/astronomy30.html If light cannot escape the gravitational pull of black holes, how is it that scientists have detected plumes of radiation coming from them? N. Yumo Seattle, Washington More Astronomy Questions Back to Ask the Experts Stephen Reucroft and John D. Swain, professors in the Department of Physics at…

http://www.physics.purdue.edu/astr263l/forum/blackholes.html Question: What is a black hole? How is it formed? (Asked by Tom Engle, Tony Hinton, Mark Kelsey, Jim Kelly and Rodney Curran) Stellar Collapse Black holes are some of the weirdest objects one encounters in the study of astronomy and astrophysics. As you may have read above, the stellar life…

http://ugrad.phys.unsw.edu.au/physoc/physics_faq/fall_in.html [Relativity FAQ] – [Copyright] updated 02-FEB-1995 by MM original by Matt McIrvin What happens to you if you fall into a black hole? Suppose that, possessing a proper spacecraft and a self-destructive urge, I decide to go black-hole jumping and head for an uncharged, nonrotating (Schwarzschild…

http://www.utah.edu/Planetarium/HSTblackhole.html FOR RELEASE: SEPTEMBER 10, 1997 CONTACT: Ray Villard Space Telescope Science Institute, Baltimore, MD (Phone: 410-338-4514) Philippe Crane European Southern Observatory, Garching, Germany (Phone: 49-89-320060) PRESS RELEASE NO.: STScI-PR97-28 HUBBLE FINDS A BARE BLACK HOLE POURING OUT LIGHT…

http://physics.hallym.ac.kr/education/faq/fall_in.html [Relativity FAQ] updated 02-FEB-1995 by MM original by Matt McIrvin What happens to you if you fall into a black hole? Suppose that, possessing a proper spacecraft and a self-destructive urge, I decide to go black-hole jumping and head for an uncharged, nonrotating (Schwarzschild) black hole…

http://www.alienq.com/articles/black.htm Black Holes A black hole is actually a point in space where formations of faster than light Primary Energy Particles of different charge potential meet and cause a tornado like effect. The now swirling clouds of energy cause a tremendous condensation and thus slowing of energy formations. The speed…

http://www.phy.mtu.edu/bht/rsgrow.html Approaching the Black Hole The first frame depicts the observer in empty space looking toward the constellation Orion. The three stars in Orion’s belt are visible to the right of the center of the screen. Sirius can be seen as the brightest star in the sky below and to left of Orion’s belt, and…

http://solar-center.stanford.edu/art/black-hole.html STIS RECORDS A BLACK HOLE’S SIGNATURE May 12, 1997 Photo No.: STScI-PRC97-12 The colorful zigzag on the right is not the work of a flamboyant artist, but the signature of a supermassive black hole in the center of galaxy M84, discovered by Hubble Space Telescope’s Space Telescope…

http://www.treasure-net.com/smatters/sm-5grav.htm Science Matters! – Black Holes and Gravity – Questions – Q501 – Is there a theoretical limit to the pull of gravity? [No Answer Yet – Do You have a candidate answer?] Q502 – Is it possible for matter to be so densely packed that a shock wave can travel faster than the speed of…

http://web.ukonline.co.uk/ad.johnson/astrnmy/bh/blakhole.htm Return to Home Page E-mail me! Guestbook Cosmic Plug Holes and Warp Drive A Discussion of Theories about Black Holes and Space-Time by Andrew Johnson This article examines in some detail the idea of a black hole. What are they? How are they formed? Do they…

http://laplace.physics.ubc.ca/~matt/Movies/YM/index.html r_h, the black hole radius), W(r,t) = -1—i.e. the kink falls into the black hole. Weak field evolution, W(r) vs r: (0.8MB MPEG) Interpolating evolutions (top, weak field bottom, black hole formation) W(r) vs log(1+r): (1.6MB MPEG) Near-critical evolutions. Here the intermediate…

http://www.physics.gmu.edu/classinfo/astr103/CourseNotes/ECText/ch19_txt.htm ASTR 103 – Supplement 19. Black Holes and Exotic Star Systems Latest Modification: November 20, 1998 Table of Contents 19.1. Relativity 19.1.1. What Is Relative in Relativity? 19.1.2. Concepts of Space and Time Biography – Albert Einstein (1879-1955) 19.1.3. Special Relativity 19.1.4. Are All…

http://www.fordhrep.pvt.k12.ny.us/aplha/599/authors/lucaj/astron~1.htm Black Holes By: John Lucaj Black holes, a branch of astronomical study, have been a hobby of mine for quite some time now. It is a very interesting and informative subject, which provides others with knowledge about astronomical objects and events. Astronomy is a science…

http://godel.ph.utexas.edu/Members/matt/Movies/YM/index.html r_h, the black hole radius), W(r,t) = -1—i.e. the kink falls into the black hole. Weak field evolution, W(r) vs r: (0.8MB MPEG) Interpolating evolutions (top, weak field bottom, black hole formation) W(r) vs log(1+r): (1.6MB MPEG) Near-critical evolutions. Here the intermediate…

http://hatteras.ncsa.uiuc.edu/bhole.html Ask Dr. Schneertz gt Dear Dr. Schneertz, gtgt I had a question about black holes. If you were to compress the mass of a gt human into a singularity, it would have a Schwartzchild radius, albeit gt really small, right? What would happen if something, like a finger, came gt near it’s…

http://www.apnet.com/inscight/06121997/graphb.htm MoreNews From the SCiENCE newsroom Posted 12 June 1997, 5 pm PST APnetHome OnlineJournals BookCatalog JournalSites Sizing Up a Black Hole Like water spiraling down a drain, gas and dust spins around a black hole in an accretion disk before being sucked to oblivion. Now scientists have for the…

http://www.unc.edu/depts/mhplanet/Universe/BHoles.html Black Holes Black holes, those mysterious, invisible gravity whirlpools, have been in the news as one of the most exciting scientific ideas of this century. Many people envision a black hole as some tremendous whirling current traveling through space, devouring any hapless planets or stars in…

http://www.jpl.nasa.gov/omega/scigoals.htm OMEGA Science Goals Massive Black Holes. As time goes on, the evidence increases for the existence of black holes, more massive than a million suns, in the exact centers of most galaxies, including our own. However, arguments continue to be made in favor of alternative scenarios. It is high time…

http://www.sciencenews.org/sn_arc97/1_18_97/fob2.htm January 18, 1997 Galactic and stellar black holes get real by R. Cowen In my entire scientific life . . . the most shattering experience has been the realization that an exact solution of Einstein’s equations of general relativity . . . provides the absolutely exact representation…

http://artemis.phyast.pitt.edu/animations/index.html Exact Solutions for the Intrinsic Geometry of Black Hole Coalescence Luis Lehner, Nigel T. Bishop, Roberto Goacutemez, Beacutela Szilaacutegyi and Jeffrey Winicour We describe the null geometry of a multiple black hole event horizon in terms of a conformal rescaling of a flat space null…

http://www.astro.ku.dk/RelViz/ostman/bhe.html Black Holes and Electromagnetism Black Holes and Electromagnetism Boris V. Gudiksen Bjørn Østman Abstract: Contents Black Hole Electrodynamics Accretion Disks Black Hole Magnetosphere Flux Freezing Disc Field Lines Black Hole Electrodynamics Black hole electrodynamics is the theory of…

http://www.ifa.hawaii.edu/faculty/kormendy/bhsearch.html The Search for Supermassive Black Holes in Galaxy Nuclei Black holes with masses of a million to several billion times the mass of the Sun are believed to be the engines that power nuclear activity in galaxies. Active nuclei range from faint, compact radio sources like that in M31 to quasars…

http://faraday.uwyo.edu/faculty/tgrandy/infophys/node15.html Next: Algorithmic Information Theory Up: Physical Applications Previous: Physics of Computation Black Hole Physics As is common knowledge, gravitationally collapsing objects of sufficient mass are doomed to form black holes (BHs), defined by an event horizon within which resides the singularity…

http://www.cvc.org/astronomy/brown.htm Black Holes by Norman Brown BCC/Summer Science Could Cygnus X-1 be a black hole? Abstract Scientists believe that certain areas of space are like giant, powerful vacuum cleaners that suck in any matter that comes to close. That matter is sucked in, crushed to infinite density, and it disappears…

http://www.seanet.com/~ksbrown/kmath409.htm Forming Black Holes … I had read somewhere that, as the star collapses, relativistic effects (i.e. time slows in gravitational field) cause the collapse to appear slower and slower to an outside observer. Isn’t it true that, from the perspective of the outside observer, the star will…

http://www.flex.com.au/~druidwgl/dsdrus01.htm Cultural-Diversity Union of Australia ~Druid Science~ CUoA Perpetually on Strike Against Cultural Genocide CUoA 1997 September 12, Friday, 14:35 The Black Hole Mystery, A Pit Full Of Unknowns Yes, the Black Hole mystery, a pit full of unknowns, Dru likes to think of the Universe as a huge living…

http://www.crystalinks.com/black_holes.html BLACK HOLESA black hole is a star that has collapsed into a tiny point known as a singularity. It is so dense that it sucks in everything near it, including light. Black holes can be seen via the death throes ofthe matter being sucked in. Although it becomes invisible past a certain point, an…

http://www.herts.ac.uk/astro_ub/a42_ub.html Astronomy Use Back at top of this Browser to return to previous position on your last page. BLACK HOLES A collapsar is a star which has collapsed because nuclear fusion is no longer taking place within its core and, as well as white dwarfs and neutron stars, there is a final type of object which a…

http://www.phy.syr.edu/courses/modules/LIGHTCONE/schwarzschild.html Home PREFACE PRIMEVAL SPECIAL GENERAL CONCLUSION Dictionary Newton Equivalence Einstein Schwarzschild Comments? Schwarzschild’s Spacetime: Introducing the Black Hole K. Schwarzschild(1873-1916) Just months after Einstein published his work on his Theory of Gravitation, Karl Schwarzschild (1916…

http://www.cybervision-network.com/nw/projects/emily/blackholes.html Emily H. Presents… BLACK HOLES The formation of Black holes and neutron stars occur when stars die. While a star is the burning, the pressure of the hot plasma at the center pushes outs and balances the force of gravity. When the star’s fuel is gone, and the burning ceases, there is no left-over…

http://www.ebtx.com/ntx/ntx24a.htm Black Hole T-Symmetry Violation W hen black holes were first postulated (seriously-Chandrasikar), there was a gut reaction by the general physics community that could not take them seriously. The underlying reason for this reaction was (and always is) a postulate in opposition…

http://www.physics.ucsb.edu/Research/activities/bh.phtml String theory, M-theory, and black holes There are two questions that presently interest me most: 1) What is string/M-theory? It is now clear…

http://www.nrao.edu/pr/press-7-8-95.html National Radio Astronomy Observatory P.O. Box O, Socorro, New Mexico 87801-0387 (505) 835-7000 FAX (505) 835-7027 For Immediate Release June 8, 1995 Contact: Dave Finley (505) 835-7302 Emerging Picture of Black Hole in Double-Star System Promises Exciting Yield of New Physics Data As scientists…

http://www.windows.umich.edu/kids_space/qastr_holes.html Quickie Questions – Astronomy Anomalies – Black Holes Date Answered Questioner (age, location) Question Answer May 19, 1999 Linda and Ellen (age 17, Alaska, USA) According to Quantum Electrodynamics, the electromagnetic force is transmitted by photons, yet black holes are said to have the…

http://www.evolpe.com/stories/test/black_holes.html Black Holes: Cyclical in Nature We start with the death of a star… A star’s energy being almost fully depleted of its resources implodes in on itself (possible collision of atoms in a specific fashion). Now we’ve got a black hole, which sucks all the mass its gravitational force comes in contact…

http://www-xray.ast.cam.ac.uk/oday/bh.html GO BACK Black holes Black holes are thought to exist in the centres of many large elliptical galaxies, for exle M87, one of the largest galaxies in our Milky Way’s neighbourhood. The core of M87 has recently been observed by the Hubble Space telescope: Another large galaxy, Centaurus A was…

http://www.outerorbit.com/ask/qa081.htm Q: Given that the universe contains such objects as black holes that swallow up matter, is there any evidence supporting an anti-black hole (white hole?) from which matter is created? (Or if one wants to assume the Law of Conservation of mass, is it possible that…

http://www.crpc.rice.edu/CRPC/newsletters/jul94/resfocus.html RESEARCH FOCUS: THE BINARY BLACK HOLE GRAND CHALLENGE PROJECT Richard Matzner, James C. Browne, University of Texas Larry Smarr, H. Ed Seidel, Paul Saylor, Faisal Saied, University of Illinois Geoffrey Fox, Syracuse University Stuart Shapiro, Saul Teukolsky, Cornell University James York…

http://www.silverlink.net/celestial/astronomy/proj/bhmj/learn.htm How did we find out about black holes? Black holes were first predicted by Einstiens theories of relativity. This was one of the few phenomena that was predicted before it was ever observed. While his theory predicted it, Einstien himself did not believe it…

http://www.rdrop.com/users/green/school/glossary.htm acceleration disk A sheet of gas and dust surrounding any massive object growing in size by attracting material. accretion disk A disk shape formed by gas as it spirals into a black hole. atom The basic unit of matter. binary star system A system in which two stars orbit around a common center of…

http://www.discover.com/nov_issue/milkey.html DISCOVER Vol. 19 No. 11 (November 1998)Table of Contents The Mysterious Middle of the Milky Way Astronomers used to dismiss our own galaxy as boring–until they found that its center is a storm of exploding stars and roiling gas, all circling a hungry black hole and adorned by a fountain of…

http://www.seanet.com/~ksbrown/kmath408.htm Descent Into A Black Hole, Part I Victor Schef: We who have not fallen into a black hole shouldn’t say that things go through the event horizon. Nathan Urban:Yes, we should. Whether or not something falls into a black hole does not depend on the observer. It might be worth mentioning that…

http://www.phbib.ruhr-uni-bochum.de/physik/htdocs/galax/ngc4261.html BLACK HOLE — Confirming the presence of yet another super-massive black hole in the universe, astronomers using the Hubble Space Telescope have found unexpected new mysteries. The black hole, and a 800 light-year-wide spiral-shaped disk of dust fueling it, are slightly offset from the center of…

http://www.astro.psu.edu/users/pablo/Research/index.html 10^6 M_\odot requires the inclusion of general relativistic effects. This plate shows the numerical simulation of tidal breakup of a 1 M_\odot main sequence star by a 10^7 M_\odot black hole. A smoothed particle code is used to solve the hydrodynamic equations for a relativistic fluid in a static…

http://www.ktca.org/newtons/11/blckhole.html Black Holes Teacher’s Guides Index BLACK HOLES What is a black hole? Why can’t light escape from a black hole? How could a star become a black hole? Does this have anything to do with ordinary, everyday gravity? David embarks on a dangerous and…

http://www.science.ca/scientists/Israel/israel.html Werner Israel Cosmologist First rigorous conjecture for the existence of Black Holes (1966). If you really enjoy your work you never need a holiday. The Person Birthdate October 4, 1931 Birthplace Berlin, Germany, but grew up in Capetown, South Africa…

http://www.leyada.jlm.k12.il/proj/black/black.htm Black Holes- Birth, Life Death According to the most recent theories, black holes are the consequence of the death of a big star, which is, minimum, 3 times as massive as the sun. The gravitational pull of such an object is so big, that neither light, nor any other kind of electromagnetic…

http://www.naturejpn.com/newnature/psu/psu990915/psu-990915e.html | Nature Japan Main Menu | Physical Science Update Menu | Subscribe Now! | SPACE: HOW TO BECOME A BLACK HOLE Black holes are among the more exotic residents of the cosmic zoo. These bodies are so massive and dense that not even light can escape their gravitational influence (this explains…

http://www.clayton.slc.k12.ut.us/students/lincar.htm Black Holes Black holes are formed when a star dies.Usually, the star is very big, which is at least three times as massive as the sun.All of its mass is squeezed into a single point. At this point, both time and space stop. It’s really hard for us to imagine a place like that, but that’s how it…

http://www.ithaca.edu/briotta/astro/StarDeath.html CHAPTER 17 – Stardeath Multiple Choice Choose the best answer for each. Whether a star will end its life as a black hole, a neutron star, or a white dwarf depends on its rate of rotation. radius. mass. surface temperature. The stellar remnant of a one solar mass star is a white dwarf. neutron star…

http://www.aps.org/BAPSAPR98/abs/S910001.html Previous abstract | Graphical version | Text version | Next abstractSession M8 – Probing Black Holes and Neutron Stars with the Rossi Explorer. INVITED session, Monday morning, April 20 Room C213, Columbus Conv. Center [M8.01] QPOs from Black Hole Candidates: Disk Oscillations or Frame Dragging…

http://www.berlinet.de/schmelzer/PG/blackHole.html Black Holes in Post-Relativistic Gravity The collaps into a black hole looks slightly different in PG – and effect of the different notion of completeness in PG and GR, similar to the big bang scenario. To see why, we have to compute the harmonic time coordinate with the appropriate…

http://helios.augustana.edu/physics/club/black-holes-the-ultimate-abyss.html On Thursday, October 16, 1997… At twelve noon… In the John Deere Lecture Hall… The Augustana Physics Club presents… Black Holes The Ultimate Abyss The most powerful forces in the universe are black holes. They are objects in space formed over thousands of years that suck up…

http://www.sciencenews.org/sn_arch/10_5_96/fob1.htm October 5, 1996 Firm Evidence of Milky Way Black Hole By Ron Cowen Astronomers have speculated for 25 years that a monster lurks at the center of the Milky Way. Now they appear to have proof. The beast in our cosmic backyard is a black hole — a dark, dense object as massive as 2.5…

http://www.wspc.com.sg/journals/mpla/1318/0001.html 1) on Kerr black holes using the parameters of the moduli space of holomorphic vector U(N)-bundles over S2 with the help of the Grothendieck splitting theorem. For N = 2, 3 we obtain this description in an explicit form as well as the estimates for the corresponding monopole masses. This gives us…

http://www.wfu.edu/physics/seminars/concannon.html WFU Physics Colloquium TITLE: Black Hole Thermodynamics with Finite Boundary Conditions SPEAKER: Professor Thomas G. Concannon , Department of Physics, WFU TIME: Thursday, October 1, 1998, starting at 4:00 PM PLACE: George P. Williams, Jr. Lecture Hall, (Olin 101) Refreshments…

http://www.pa.msu.edu/~sciencet/ask_st/061897.html If scientists tell us that there are black holes in the universe that even light can’t escape from, how can they prove they exist? (Lansing State Journal, June 18, 1997) Question submitted by Kristina Geer Light is made up of particles called photons. Photons move through the galaxy at the speed…

http://www.tsba.org/dfw/hole.html 1.5 x the mass of the sun it would no longer be able to support itself and therefore begin the rapid transformation into a black hole. A black hole is a phenomenon where the mass of the star continues to collapses into itself becoming smaller and denser. The density of the mass creates a…

http://www.rdrop.com/users/green/school/form.htm Main Page Black Hole Formation Black Hole Detection Event Horizon Primordial Black Holes Quasars Hawking Radiation The Information Paradox Frame Dragging Likely Black Hole Candidates Our Attempts To Contact Stephen Hawking Glossary References Used About the Authors There are two main…

http://www.ess.sunysb.edu/simswg/siswg/node72.html Next: Added Capabilities with SIM: Up: Three Candidate Imaging Programs Previous: Young Stellar Objects Black Hole Candidates in Virgo Cluster Galaxies: A Unique Opportunity The combination of HST/WFPC2 images and HST/FOS spectra has allowed the successful detection of a M and M…

http://www.timbooktu.com/rockey/blkholes.htm Black Holes by Mark Rockeymoore Black holes conceal trolls, mental troglodytes employ carnal delights, questing for souls to keep disturbing the innocent’s sleep, flights of fancy or sorcerous geomancy, magic and words of power, flower in a heavenly tower, banshee’s dream-like wails…

http://constellation.gsfc.nasa.gov/goals/gravity_online.html [an error occurred while processing this directive] Supermassive Black Holes Ben Bromley’s images of Black Holes Black Hole reverberation animation by Chris Reynolds for Constellation-X Since their discovery, active galactic nuclei (AGN) have stood out as uniquely luminous objects in the…

http://www.mpg.de/news99/news06_99.htm How to feed a black hole ? Do black holes wipe up all material from their sourroundings? No, they don’t! If we would squeeze the mass of the sun to the size of a black hole (about 3km), all planets would still move on stable orbits. New radio observations of the…

http://www.newton.dep.anl.gov/newton/askasci/1995/astron/AST204.HTM Ask A Scientistcopy Astronomy Archive Black holes and generating gravity Author: heidi m olson How do black holes generate gravity? Why are not they stronger or weaker than they are? Response #: 1 of 1 Author: samuel p bowen All matter attracts other matter. That is gravity. Black…

http://www.jpl.nasa.gov/omega/bbhx.htm OMEGA and Massive Black Hole Binaries Ever increasing evidence for the existence of massive black holes in most galactic nuclei, along with the observations (Hubble and otherwise) of high rates of galactic mergers at early times (Z~1), leads to predictions of massive black hole binaries in many…

http://www.fnal.gov/directorate/public_affairs/letters/blackholerotation.html Rotation of Black Holes Hello Alyssa — The questions you sent to Fermilab about physics didn’t get lost, they just got routed to a couple of lazy postdocs. That’s why it took so long to get back to you. Anyway, we thought that these were such good questions that _two_ of us decided to take a crack…

http://www.astro.uva.nl/local/jobs/vdk1.html PhD positions: black holes and neutron stars in X-ray binaries AIO/OIO posities: neutronensterren en zwarte gaten in roumlntgendubbelsterren Several PhD (AIO/OIO) positions are currently available or soon becoming available in Amsterdam for observational research into the properties of black…

http://www.outerorbit.com/ask/qa111.htm Q: Once light or objects go into a black hole, they never come out. What happens to them inside the black hole? — Ben and Joe A: Let me try to explain a few of the main points about black holes so that I can answer your question. A black hole forms, for exle, when a star that is larger than a…

http://www.source-recovery.com/src-news-art-2000blackholes.shtml Year 2000 Black Holes: What You Can’t See Can Hurt You Leland G. Freeman The Year 2000 is riddled with black holes. A black hole is an area of space with so much concentrated mass, anything that comes near it gets caught in its gravitational pull. You can’t see a black hole, but its pull is so…

http://www.treasure-troves.com/physics/EternalBlackHole.html Eternal Black Hole A massless Black Hole which is a stable topological structure held together by the nonlinearity of its gravitational field. References Anninos, P. Hobill, D. Seidel, E. Smarr, L. and Suen, W.M. “Collision of 2 Black Holes.” Phys. Rev. Let. 71, 2851-2854, 1993…

http://www.library.ucsb.edu/sel/inspec/subj-3.html Your search: f thes black hole# INS-gt f kw black hole# The MELVYL system is working on your request… Search request: F KW BLACK HOLE# Search result: 2,904 citations in the INSPEC database Type D to display EXPLAIN LOCATE for library locations HELP for details. Type SHOW SEARCH to…

http://euclid.tp.ph.ic.ac.uk/Papers/papers_95-6_.html IC Theory Group Preprints 95-6 Back to the papers index A. A. Tseytlin Composite black holes in string theory [Postscript] [Source] C. G. Callan, S. S. Gubser, I. R. Klebanov, A. A. Tseytlin Absorption of Fixed scalars and the D-brane Approach to Black Holes…

http://www.aas.org/publications/baas/v29n5/aas191/abs/S078014.html Previous abstract Next abstract Session 78 – Seyfert Galaxies. Display session, Friday, January 09 Exhibit Hall, [78.14] Weighting black holes in AGNs with SIM T. Boeker, R. J. Allen (STScI) We present results from simulations of the synthesis imaging mode of the Space Interferometer Mission (SIM…

http://www-astro-theory.fnal.gov/Personal/ats/strhole.html A few years back, Achucarro, Gregory and Kuijken showed that there were solutions to the Abelian-Higgs equations in a black hole background in which the string threaded the black hole. They argued that at least topological scalar hair could reach to infinity in this system. We (Ashbourn-Chamblin…

http://www.arval.org.ve/blackholes.htm Up: Index Black Holes Particle Physics and Astronomy Research Council Royal Greenwich Observatory Information Leaflet No. 9: ‘Black Holes’. Black Holes: Black holes are peculiar objects with many strange properties, but most books and…

http://www.natashascafe.com/html/hole.html Recipe for Making Black Holes Take 70 Kilograms of any mass. Compress to less than 10-23 cm or 1 divided by 100,000 billion billion When the radius becomes 10 billion times smaller than an electron you have created a black hole. The Earth with a mass of…

http://phys.clas.kitasato-u.ac.jp/info/black980907 ********************************************** Yukawa International Seminar BLACK HOLES AND GRAVITATIONAL WAVES — New Eyes in the 21st Century — June 28 — July 2, 1999 Kyoto, Japan ********************************************** sponsored by Yukawa…

http://ourworld.compuserve.com/homepages/Amjad_Majeed/wormhole.htm Wormholes A wormhole is a portal through space, and possibly time, created by a black hole linked to its opposite white hole somewhere else. A black hole, of course, is a collapsed neutron star that has teetered past the three solar mass limit – into the twilight zone of Einstein’s General Theory…

http://www.itp.ucsb.edu/conference/bholet-info.html ITP Conference on Black Holes: Fact and Fiction February 6, 1999 Coordinators: O Blaes, R. Blandford, D. Eardley J.-P. Lasota In conjunction with the ITP Spring program Black Hole Astrophysics, ITP will host a Secondary Physics Teachers’ Educational Forum on Black Holes: Fact and Fiction…

http://www.aps.org/praw/lilienfe/99winner.html 1999 JULIUS EDGAR LILIENFELD PRIZE to Stephen William Hawking University of Cambridge Citation: For boldness and creativity in gravitational physics, best illustrated by the prediction that black holes should emit black body radiation and evaporate, and for the special gift of making…

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