Open Questions: Black Holes
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See also: Quantum gravity --
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M-theory
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Region around black hole of Centaurus A
See
HubbleSite page for information.
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Site indexes
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Open Directory Project: Black Holes
- Categorized and annotated links. A version of this
list is at
Google, with entries sorted in "page rank" order.
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The Net Advance of Physics: Black Holes
- An index of tutorial and research articles
located at the
physics preprint archive.
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Yahoo News Full Coverage: Black Holes
- Links to recent news stories from various sources. Also includes
links to sites dealing with black holes.
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Galaxy: Black Holes
- Categorized site directory. Entries usually include
descriptive annotations.
More
here.
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Yahoo Directory: Black Holes
- Annotated list of links.
Sites with general resources
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Virtual Trips to Black Holes and Neutron Stars
- By Robert Nemiroff.
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Movies from Numerical Relativity Simulations
- Downloadable animations and visualizations mostly related
to black holes, but also neutron stars and Brill waves. Created
by the
National Center for Supercomputer Applications (NCSA).
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Falling Into a Black Hole
- Animations and a large quantity of technical information.
By Andrew Hamilton.
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Binary Black Hole Home Page
- This is the home page of the "Binary Black Hole Grand Challenge
Alliance", a group working to develop computer models of binary
black hole coalescence. This process is considered likely to
generate strong gravitational waves. More
here.
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HubbleSite News and Views: Black Holes
- Press releases and images related to black holes, from
HubbleSite.
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TMR Network: Accretion onto Black Holes, Compact Stars, and
Protostars
- Web site for a research collaboration investigating accretion
of matter onto black holes.
Surveys, overviews, tutorials
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Black Holes FAQ
- Very good answers to the basic questions about black holes,
by Ted Bunn.
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Sci.physics FAQ on Black Holes
- Another good FAQ list, by Matt McIrvin. May also be found
here.
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Jillian's Guide to Black Holes
- A light-hearted introduction to the subject, with useful
references and
external links. By
Jillian Bornak.
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Black hole
- Article from
Wikipedia. See also
Supermassive black hole
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Q & A: Black Holes
- Fairly extensive frequently-asked questions and answers, at
the
Chandra X-ray Observatory site.
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Black Holes
- Part of the
Cambridge Relativity site.
Includes an introduction to black holes,
discussion of observational evidence, and video animations.
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Black Holes and Quantum Gravity
- Brief article from the Cambridge Relativity pages. Touches on
quantum gravity.
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Black Holes
- Part of NASA's
Imagine the Universe site. Contains basic information about
black holes, computer animations, and links to related topics.
There is also a page on the
growth of massive black holes, and a more
advanced level page on the topic.
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Frequently Asked Questions About Black Holes
- Very good set of questions and answers, by
John Simonetti.
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Black Holes and X-ray Astronomy
- Contains some good tutorial essays on black holes, the
galactic center, and
quasars. Written by
Simon Vaughan.
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Ask a High-Energy Astronomer: Black Holes
- Common questions, with answers, provided by NASA's
Ask a High-Energy Astronomer service.
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Home Page of Barrett O'Neill
- Contains short articles based on his book,
The Geometry of Kerr Black Holes.
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Coming soon: First pictures of a black hole
- May 2009 New Scientist article.
"You can't see a black hole directly, but you can see its
shadow - and now vast telescopes are ready to get their first
glimpse of the cosmic monster at the heart of our galaxy."
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Black holes, but not as we know them
- January 22, 2005 article from
New Scientist.
Describes new theoretical ideas about black holes and connections
with string theory.
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Twisted Physics: How Black Holes Spout Off
- August 2004
article from Space.com.
Discusses differing theories of jets associated with black holes.
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Explore Black Holes
- Collection of news stories, broadcast transcripts, and
articles about black holes at
ABC News (Australia).
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Black Holes: Dark and Deadly
- February 2007
article from Space.com.
Transcript of an interview with Neil Tyson about black holes and
his new book Death by Black Hole and other Cosmic Quandaries.
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Getting a Grip on Black Holes
- February 2007
article from Space.com.
Discusses the opinions of black hole experts on what they think are
the most important open questions about black holes.
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The True Shape of Black Holes
- September 2003
article from Space.com.
Discusses the spin and geometry of black holes.
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Voyage into the Vortex: Survival Tips for Black Hole Travelers
- April 2003
article from Space.com.
Discusses different possibilities for the internal structure of
black holes.
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The New History of Black Holes: 'Co-evolution' Dramatically
Alters Dark Reputation
- January 2003
article from Space.com.
Discusses a relatively new theory of how black holes
and galaxies might develop together.
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The Music of Black Holes
- April 2002
article from Space.com.
Discusses the music-like variability of x-ray emissions from
black holes.
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Monster Black Holes: How Galactic Collisions Fed Them
- June 2001 article from
Space.com.
Discusses how supermassive black holes formed when galaxies collided
and merged in the early universe.
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Opportunistic Black Holes Are No Suckers
- June 2001 article from
Space.com. It explains how the the gravitational field of
a black hole is no stronger than that of a star of equal mass.
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New Spin on Black Holes: Like Stars, They Rotate
- May 2001
article from Space.com.
Discusses observations which indicate the existence of spinning
black holes.
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Black Holes
- Overview from
Stephen Hawking's Universe.
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Black Holes and Neutron Stars
- Several pages on the subject, by Chris Miller. Includes
questions and answers, a
bibliography, and
external links.
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Black Holes
- Good tutorial from Mike Guidry's
Violence in the Cosmos.
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Black Holes
- A set of pages from the
Official String Theory Web site about how relatively recent
developments in string theory help explain the entropy of
black holes and the "black hole information problem".
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The Black Hole Information Loss Problem
- Article by Warren G. Anderson.
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Black Holes and Beyond
- Excellent multimedia site created by the
National Center for Supercomputer Applications (NCSA). Provides
extensive tutorial on the physics of black holes and how they are
studied by means of computer modeling. Contains some computer
animations of black holes and gravitational waves, called
Movies from the Edge of Spacetime.
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The Case for Discrete Energy Levels of a Black Hole
- Slide presentation given by Jacob Bekenstein at the
2001: A Spacetime Odyssey conference.
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How Do We See Black Holes?
- Brief tutorial introduction by John Blondin.
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The Naked Singularity
- Series of brief overview articles on black holes, Hawking
radiation, the information paradox, and more.
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If light cannot escape the gravitational pull of black holes,
how is it that scientists have detected plumes of radiation coming
from them?
- Scientific American page with
answers and external links from several experts.
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The Search for Black Holes
- Survey paper by Steven Degennaro. Focuses on how Cygnus X-1
was identified as a black hole.
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Black Holes
- Part of the
Chandra X-Ray Observatory Center. Provides overviews of
stellar, mid-size, and supermassive black holes.
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Almost certain escape from a black hole
- September 2006 article from
Physics World, by
Seth Lloyd.
"Recent theoretical results have overturned the long-held
notion that information cannot escape from a black hole."
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Supermassive black holes
- June 2002 article from
Physics World, by
Laura Ferrarese and David Merritt, subtitled "Astronomers have confirmed
that black holes weighing billions of solar masses lie at the heart of
every galaxy and believe that some galaxies might contain pairs of black
holes."
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Black holes and beyond
- February 2002 editorial from
Physics World
which deals with some of the peculiarities of the theory of
black holes.
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DIY black holes could supply the missing link
- January 2001 news article from
Physics World
about possible ways to make laboratory models of black holes.
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Frozen Stars
- July 2003 Scientific American article.
"Black holes may not be bottomless pits after all."
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Black Holes Sing
- October 2007 Scientific American article.
"Although sound cannot be heard in space, it can sometimes be seen."
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Black Hole
- Brief January 2003 overview of black holes by
Karl S. Kruszelnicki.
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Black Holes: The Ultimate Abyss
- 1997 tutorial article on black holes, based on an Australian
Broadcasting Company TV program.
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Lone black holes adrift in the galaxy
- January 2000 news article about stellar mass black holes
that are not part of a binary system.
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Black Holes
- Brief article on black holes, based on an Australian
Broadcasting Company radio program.
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When black holes collide
- September 1999 news article about computer simulation of
black hole collisions.
Press releases, news stories
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Deepest X-Rays Ever Reveal Universe Teeming With Black Holes
- March 13, 2001 press release on a discovery made by the
Chandra X-Ray Observatory.
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Chandra Spies on Black Holes in a Nearby Galaxy
- May 15, 2001 news article from Scientific American.
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Scientists Verify That Some Black Holes Spin
- May 2, 2001 news article from Scientific American.
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Black Hole Hiding Nearby
- March 12, 2001 news article from Scientific American
regarding confirmation of the existence of a supermassive black hole
at the center of the Centaurus A galaxy.
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Looking for Black Holes in the Dark
- January 12, 2001 news article from Scientific American.
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Black Holes: More, Younger and Meaner
- December 14, 2000 news article from Scientific American.
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Black Holes Linked to Star Births
- November 8, 2000 news article from Scientific American.
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A New Black Hole
- September 13, 2000 news article from Scientific American.
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New Evidence for Black Holes
- January 12, 2001 NASA press release. "By seeing almost nothing,
astronomers say they've discovered something extraordinary: the event
horizons of black holes in space."
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'Death Spiral' Around a Black Hole Yields Tantalizing Evidence
of an Event Horizon
- January 11, 2001 press release and related information from
the
Space Telescope Science Institute. The object in question
is Cygnus XR-1.
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Astronomers find middleweight black hole
- September 14, 2000 news article from
Physics Web.
"An international team of astronomers has identified a new kind
of black hole. The Chandra X-ray telescope detected the
medium-sized black hole, which is about the size of the
Moon but has a mass at least 500 times that of the Sun."
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Astronomers Find a New Size of Black Hole
- September 13, 2000 New York Times article on the discovery
of midsize black holes.
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A Cosmic Searchlight
- July 6, 2000 press release and related information from
the
Space Telescope Science Institute.
The image is a relativistic particle jet emanating from the massive
central black hole of M87.
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Black Holes Shed Light on Galaxy Formation
- June 5, 2000 press release and related information from
the
Space Telescope Science Institute.
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Feasting Black Hole Blows Bubbles
- June 5, 2000 press release and related information from
the
Space Telescope Science Institute.
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Lone Black Holes Discovered Adrift in the Galaxy
- January 13, 2000 press release and related information from
the
Space Telescope Science Institute.
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Black holes once ruled the universe
- March 2001 news article about abundance of black holes
revealed by a Chandra x-ray telescope deep field survey.
- How Quantum Effects Could Create Black Stars, Not Holes
Carlos Barceló, Stefano Liberati, Sebastiano Sonego; Matt Visser
Scientific American, October 2009
- Quantum effects may prevent true black holes from forming
and give rise instead to dense entities called black stars.
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Do Naked Singularities Break the Rules of Physics?
Pankaj S. Joshi
Scientific American, January 2009
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Ultramassive: As Big As It Gets
Charles Petit
Science News, October 25, 2008
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- An Echo of Black Holes
Theodore A. Jacobson; Renaud Parentani
Scientific American, December 2005
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Quantum Black Holes
Bernard J. Carr; Steven B. Giddings
Scientific American, May 2005
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The Hole Story
Ron Cowen
Science News, January 22, 2005
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- Black Hole Computers
Seth Lloyd; Y. Jack Ng
Scientific American, November 2004
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- Hawking a Theory
Graham P. Collins
Scientific American, October 2004
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The Galactic Odd Couple
Kimberly Weaver
Scientific American, July 2003,
- Is the black hole information paradox solved?
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Jet Astronomy
Ron Cowen
Science News, November 9, 2002, pp. 299-300
- Jets of high-speed particles are common to various astronomical
objects, such as pulsars, stellar-scale black holes, and massive
black holes. New X-ray observations of jets associated with small
black holes are making possible a better understanding of the
general process.
- Beyond Black
Ray Jayawardhana
Astronomy, June 2002, pp. 28-33
- There is extensive circmustantial evidence for the existence
of black holes. But specific proof "beyond a reasonable doubt"
for their existence has been surprisingly difficult to come by.
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The Black Hole Next Door
Peter Weiss
Science News, March 23, 2002, pp. 187-188
- If some theories of extra spatial dimensions are correct,
microscopic black holes could form from collisions of subatomic
particles in very high energy cosmic rays or in particles
produced in the next generation of particle accelerators.
- Get the Hole Story
Neil F. Comins
Astronomy, April 2001, pp. 48-53
- Elementary overview article.
- Revisiting the Black Hole
Roger Blandford, Neils Gehrels
Physics Today, June 1999, pp. 40-46
- Until very recently the main objective of research on black
holes has been to prove their existence. Now that this is virtually
certain, the objective has shifted to making detailed predictions
and observations of black hole behavior
- Black Hole Hunters
Steve Olson
Astronomy, May 1999, pp. 48-55
- Massive black holes at the centers of most galaxies appear to
play a large role in the development of the host galaxy.
- Unmasking Black Holes
Jean-Pierre Lasota
Scientific American, May 1999, pp. 40-47
- Until recently the evidence for existence of black holes
was strong but only circumstantial. New observations now require
the existence of black holes with their characteristic event
horizons and unambiguously distinguish black holes from neutron
stars.
- A Beast in the Core
Marcia Bartusiak
Astronomy, July 1998, pp. 42-47
- Supermassive black holes may occur at the center of most
large galaxies. They may be the remnants of a quasar phase
earlier in the life of the galaxies.
- To the Edge of Space and Time
Martin Rees
Astronomy, July 1998, pp. 48-53
- The physics of black holes was both predicted and described
by various solutions of the equation of general relativity.
- Does a Monster Lurk Closeby?
Bonnie Schulkin
Astronomy, September 1997, pp. 42-47
- Recent evidence points towards the existence of a supermassive
black hole at the center of the Milky Way.
- Black Holes and the Information Paradox
Leonard Susskind
Scientific American, April 1997, pp. 52-57
- The information paradox is a conflict between the apparent
loss of information when matter is consumed by a black hole and
conservation requirements of quantum theory. Resolution of the
paradox may facilitate a quantum theory of gravity.
- Black Holes, Naked Singularities, and Cosmic Censorship
Stuart L. Shapiro; Saul A. Teukolsky
American Scientist, July-August 1991, pp. 330-343
- The cosmic censorship hypothesis of Roger Penrose states
that singularities of the general theory of relativity must
always be concealed within the event horizon of a black hole.
Determining the validity of this hypothesis is one of the most
important problems in general relativity. Computer simulation
experiments cast doubt on the hypothesis.
- The Membrane Paradigm for Black Holes
Richar H. Price; Kip Thorne
Scientific American, April 1988, pp. 69-77
- The physics of the interaction between black holes and their
environment seems like it must be quite exotic. However, a great
deal can be understood by regarding a black hole as an electrically
conducting, spheroidal membrane.
- The Birth of Neutron Stars and Black Holes
Adam Burrows
Physics Today, September 1987, pp. 28-37
- Theory indicates that stars more than 6 to 8 times the mass
of the Sun cannot end their lives as white dwarves but must instead
explode as supernovae. The final result of such an event is usually
a neutron star or a black hole, but the exact conditions leading
to one or the other are uncertain.
- The Quantum Mechanics of Black Holes
S. W. Hawking
Scientific American, January 1977, pp. 34-40
- It has long been assumed that nothing, not even light, can
escape from a black hole. But now it appears that matter can
indeed escape by a process like quantum tunneling, and a
black hole can even "evaporate" completely.
- Leonard Susskind; James Lindesay – An Introduction to
Black Holes, Information, and the String Theory Revolution: The
Holographic Universe
World Scientific Publishing Co., 2005
- This is a relatively short book that covers a lot of ground
and is intended for readers who have had at least an
introductory course in quantum mechanics.
Part I reviews basic background material on the mathematical
theory of black holes and related quantum mechanics. Part II
covers entropy bounds and holography as they relate to
black holes. Part III deals with the use of string theory to
calculate black hole entropy, following Bekenstein and
Hawking.
- Derek Raine; Edwin Thomas – Black Holes: An
Introduction
Imperial College Press, 2005
- As the subtitle promises, this book is an introduction,
though not an elementary one, with plenty of math and
physics in its 150 pages. The major topics are spherically
symmetric (the simplest) and rotating black holes, thermodynamics
of black holes, and (a little bit about) astrophysical
black holes.
- Edwin F. Taylor; John Archibald Wheeler -- Exploring Black
Holes: Introduction to General Relativity
Addison Wesley Longman, 2000
- The authors are masters of the subject. (Wheeler coined the
term "black hole".) The present book is a mathematical
introduction to general relativity which is developed around
the theory of black holes. However, it is a gentle introduction
which uses little more than calculus and does not develop the
theory in full generality.
- Mitchell Begelman; Martin Rees - Gravity's Fatal Attraction:
Black Holes in the Universe
Scientific American Library, 1998
- This attractive and colorfully illustrated volume, full of
graphs, diagrams, and astrophotos, provides a nontechnical
overview of our knowledge of black holes. Topics include
how black holes form, phenomena which occur in the vicinity of
a black hole, massive black holes in galaxies, and observational
evidence.
- Robert M. Wald, ed. – Black Holes and Relativistic
Stars
University of Chicago Press, 1998
- Consists of 12 papers, by leading experts in the field,
collected for a symposium in honor of S. Chandrasekhar.
Authors include Thorne, Rees, Penrose, Hartle, and Hawking.
The material is mostly theoretical rather than observational.
Although the volume is written for professionals,
much of it is useful for seriously interested amateurs.
- Kitty Ferguson - Prisons of Light: Black Holes
Cambridge University Press, 1996
- Relatively brief, non-technical survey of black hole theory
and summary of observational evidence of the existence of black
holes.
- Clifford Pickover - Black Holes: A Traveler's Guide
John Wiley & Sons, 1996
- Brief, entertaining, and quirky melange of information on
black holes. Has an interesting survey of specialist opinions
on the subject, and simple computer programs in C and Basic
for a few elementary calculations.
- Kip S. Thorne - Black Holes & Time Warps: Einstein's Outrageous
Legacy
W. W. Norton & Company, 1994
- Thorne is one of the chief authorities in this field, and this
book is a definitive, non-mathematical exposition. It concludes
with speculations on the possibilities of wormholes and time
travel. Good glossary and biblography. Easily the best choice
as an introduction, if you have the time.
- John Gribbin - Unveiling the Edge of Time: Black Holes, White
Holes, Wormholes
Harmony Books, 1992
- Introduction to black holes, together with more speculative
material on "white holes", "wormholes", and time travel.
- Jean-Pierre Luminet - Black Holes
Cambridge University Press, 1992 (translation), 1987 (original)
- Good general survey of black hole theory by a specialist in
the subject. Topics include
supernovae, pulsars, white holes, quantum black holes, primordial
black holes.
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Copyright © 2002 by Charles Daney, All Rights Reserved