Black Holes

An Introduction


Author: Derek J. Raine,Edwin George Thomas

Publisher: Imperial College Press

ISBN: 1848163827

Category: Science

Page: 198

View: 1942

This introduction to the fascinating subject of black holes fills a significant gap in the literature which exists between popular, non-mathematical expositions and advanced textbooks at the research level. It is designed for advanced undergraduates and first year postgraduates as a useful stepping-stone to the advanced literature. The book provides an accessible introduction to the exact solutions of Einstein's vacuum field equations describing spherical and axisymmetric (rotating) black holes. The geometry and physical properties of these spacetimes are explored through the motion of particles and light. The use of different coordinate systems, maximal extensions and Penrose diagrams is explained. The association of the surface area of a black hole with its entropy is discussed and it is shown that with the introduction of quantum mechanics black holes cease to be black and can radiate. This result allows black holes to satisfy the laws of thermodynamics and thus be consistent with the rest of physics. In this new edition the problems in each chapter have been revised and solutions are provided. The text has been expanded to include new material on wormholes and clarify various other issues.

Chronik der Sternenkrieger #41 - Black Hole X

Alfred Bekker's Chronik der Sternenkrieger, #41


Author: Alfred Bekker

Publisher: Alfred Bekker

ISBN: 1386441503

Category: Fiction

Page: N.A

View: 2821

Black Hole X Chronik der Sternenkrieger #41 von Alfred Bekker Der Umfang dieses Buchs entspricht 120 Taschenbuchseiten. Im Jahr 2256 tauchen erstmalig geheimnisvolle Lichtsonden auf. Ihr Ursprung liegt mutmaßlich auf der anderen Seite der Galaxis in einem Raumsektor, der 40.000 Lichtjahre von der Erde entfernt ist. Eine Handvoll irdischer Raumschiffe war ausgesandt worden, um dem Geheimnis auf die Spur zu kommen, von dem man ahnte dass es einerseits mit der uralten Alien-Zivilisation zu tun hatte, deren Angehörige als DIE ALTEN GÖTTER bekannt waren und vor langer Zeit Galaxis beherrscht hatten. Anderseits aber standen diese Lichtsonden mit gewaltigen Veränderungen im galaktischen Machtgefüge in Zusammenhang. Die Raumschiffe STERNENKRIEGER, SONNENWIND, LEVIATHAN, und ODYSSEUS waren durch ein Wurmloch in jene 40.000 Lichtjahre entfernte Region der Galaxis gelangt. Die Umstände hatten sie voneinander getrennt, eine Rückkehr in den Irdischen Sektor war derzeit ausgeschlossen, da das Wurmloch sich geschlossen hatte. Und das Rätsel, dessentwegen diese Raumfahrer in jene ferne Region der Galaxis vorgedrungen waren, war nach wie vor ungelöst.

Perry Rhodan 2404: Versteck am Black Hole

Perry Rhodan-Zyklus "Negasphäre"


Author: Arndt Ellmer

Publisher: Perry Rhodan digital

ISBN: 3845324031

Category: Fiction

Page: 64

View: 8969

Auf der Spur der Pressor-Garde - und ARCHETIM erwacht in seinem HORT Im Frühjahr 1346 Neuer Galaktischer Zeitrechnung steht die Menschheit vor der größten Bedrohung ihrer Geschichte: Mit einer gigantischen Übermacht hat die Terminale Kolonne TRAITOR die Milchstraße besetzt und alle bewohnten Planeten unter ihre Kontrolle gebracht. Nur wenige Verstecke in der Milchstraße sind noch "frei". Dazu gehören die Erde und die anderen Planeten des Solsystems, die sich hinter dem TERRANOVA-Schirm verbergen. TRAITOR steht im Dienst der sogenannten Chaotarchen. Deren Ziel ist, aus den Welten der Milchstraße einen Chaotender zu formen und damit die Existenz der Negasphäre abzusichern, die in der Nachbargalaxis Hangay entsteht. Gewöhnliche Lebewesen können in einer Negasphäre nicht existieren, auch sind alle Naturgesetze an solch einem Ort außer Kraft gesetzt. Perry Rhodan weiß allerdings, dass vor zwanzig Millionen Jahren schon einmal eine Negasphäre verhindert werden konnte, und reist mit dem neuen Raumschiff JULES VERNE in die Vergangenheit. In der Milchstraße, die damals als Phariske-Erigon bekannt war, gerät er in die Hand der Chaosmächte. Währenddessen entdeckt Generalin Kamuko das VERSTECK AM BLACK HOLE...

Black Holes


Author: Amanda Davis

Publisher: The Rosen Publishing Group

ISBN: 9780823950614

Category: Juvenile Nonfiction

Page: 24

View: 5339

Briefly describes the formation and composition of black holes and the forces connected with them.

Black Hole Astrophysics

The Engine Paradigm


Author: David L. Meier

Publisher: Springer Science & Business Media

ISBN: 3642019366

Category: Science

Page: 927

View: 464

As a result of significant research over the past 20 years, black holes are now linked to some of the most spectacular and exciting phenomena in the Universe, ranging in size from those that have the same mass as stars to the super-massive objects that lie at the heart of most galaxies, including our own Milky Way. This book first introduces the properties of simple isolated holes, then adds in complications like rotation, accretion, radiation, and magnetic fields, finally arriving at a basic understanding of how these immense engines work. Black Hole Astrophysics • reviews our current knowledge of cosmic black holes and how they generate the most powerful observed pheonomena in the Universe; • highlights the latest, most up-to-date theories and discoveries in this very active area of astrophysical research; • demonstrates why we believe that black holes are responsible for important phenomena such as quasars, microquasars and gammaray bursts; • explains to the reader the nature of the violent and spectacular outfl ows (winds and jets) generated by black hole accretion.

The Galactic Supermassive Black Hole


Author: Fulvio Melia

Publisher: Princeton University Press

ISBN: 9780691131290

Category: Science

Page: 296

View: 7422

Here, one of the world's leading astrophysicists provides the first comprehensive and logically structured overview of the many ideas and discoveries pertaining to the supermassive black hole at the galactic center known as Sagittarius A*. By far the closest galactic nucleus in the universe, Sagittarius A* alone can provide us with a realistic expectation of learning about the physics of strong gravitational fields, and the impact of such fields on the behavior of matter and radiation under severe physical conditions. Its proximity may even provide the opportunity to directly test one of general relativity's most enigmatic predictions--the existence of closed pockets of space-time hidden behind an event horizon. The plethora of research on Sagittarius A* since its discovery in 1974 has long seemed an interwoven pattern of loose threads. No one has successfully synthesized this growing body of work into a manageable, coherent book both for professional researchers and for students taking courses focusing on black holes and galactic nuclei--until now. With Fulvio Melia's The Galactic Supermassive Black Hole, readers finally have at their disposal a one-volume crucible of essential ideas, logically streamlined but with thorough references for those wishing to explore the various topics in greater depth.

Black Holes: A Very Short Introduction


Author: Katherine Blundell

Publisher: Oxford University Press

ISBN: 0199602662

Category: Science

Page: 144

View: 2230

Black holes are a source of wide fascination. In this Very Short Introduction, Katherine Blundell addresses a variety of questions, including what a black hole actually is, how they are characterised and discovered, to what happens if you get too close to one. Explaining how black holes formand grow across cosmic time, as well as how many there are in the Universe, she also considers how black holes interact with matter - by stealing material that belongs to other stars, and how black holes give rise to quasars and other spectacular, yet exotic phenomena in outer space.

Black Hole Physics

Basic Concepts and New Developments


Author: V. Frolov,I. Novikov

Publisher: Springer Science & Business Media

ISBN: 9780792351450

Category: Science

Page: 770

View: 867

This volume on black holes can be seen as a sequel to Physics of Black Holes, published by Kluwer Academic Publishers in 1989. The authors are recognised experts in their field, and have many years' experience in teaching courses on general relativity and black holes. The present work covers practically all aspects of black hole physics and its astrophysical applications. Among the topics treated in depth are: spacetime of stationary black holes, general theory of black holes, black hole perturbations, black hole numerics, black hole electrodynamics, black holes in unified theories of gravity, quantum black holes, final states of evaporating black holes and the information loss puzzle. Special attention is paid to the role of black holes in astrophysics and observational evidence of black hole existence. Many exotic subjects linked with black holes, such as white holes, wormholes, and time machines are discussed in detail. Numerous appendices cover mathematical aspects of general relativity and black holes and quantum field theory in curved space time. This makes the book practically self-contained. Extensive references provide the reader with a guide to the literature in this field. Audience: This book will be of interest to researchers and postgraduate students whose work involves relativity and gravitation, statistical physics, thermodynamics, active galactic nuclei and stellar physics.

Black Holes

The Membrane Paradigm


Author: Kip S. Thorne,Kirk S. Thorne,Richard H. Price,Douglas A. MacDonald

Publisher: Yale University Press

ISBN: 9780300037708

Category: Science

Page: 367

View: 8112

A pedagogical introduction to the physics of black holes. The membrane paradigm represents the four-dimensional spacetime of the black hole's "event horizon" as a two-dimensional membrane in three-dimensional space, allowing the reader to understand and compute the behavior of black holes in complex astrophysical environments.

Modeling Black Hole Evaporation


Author: Alessandro Fabbri,José Navarro-Salas

Publisher: World Scientific

ISBN: 1783260386

Category: Science

Page: 348

View: 3672

The scope of this book is two-fold: the first part gives a fully detailed and pedagogical presentation of the Hawking effect and its physical implications, and the second discusses the backreaction problem, especially in connection with exactly solvable semiclassical models that describe analytically the black hole evaporation process. The book aims to establish a link between the general relativistic viewpoint on black hole evaporation and the new CFT-type approaches to the subject. The detailed discussion on backreaction effects is also extremely valuable. Contents: Classical Black HolesThe Hawking EffectNear-Horizon Approximation and Conformal SymmetryStress Tensor, Anomalies and Effective ActionsModels for Evaporating Black Holes Readership: Graduate students and researchers in gravitation, high energy physics and astrophysics. Key Features:Detailed and pedagogical presentation of the Hawking effectDerivation of black hole radiance using the Rindler and AdS space near-horizon approximationExtensive use of two-dimensional conformal symmetry and intuitive derivation of the trace anomaly using equivalence principle argumentsUse of solvable models for the study of backreaction effects and the information loss problem in black hole spacetimesKeywords:Black Holes;Quantum Fields in Curved Space;Semiclassical Gravity;Hawking Effect;Black Hole Evaporation;Conformal Symmetry;Quantum Stress Tensor;Backreaction

Black Holes and the Universe


Author: Igor D. Novikov

Publisher: Cambridge University Press

ISBN: 9780521558709

Category: Nature

Page: 176

View: 9142

A popular account of the properties and significance of black holes.

Black Holes


Author: Don Nardo

Publisher: N.A


Category: Juvenile Nonfiction

Page: 112

View: 9056

Discusses the history and current state of scientific understanding of black holes, exploring what they are, how they are formed, potential uses, and what they tell us about the fate of the universe.

The Mathematical Theory of Black Holes


Author: Subrahmanyan Chandrasekhar

Publisher: Oxford University Press

ISBN: 9780198503705

Category: Science

Page: 646

View: 1352

"The theory of black holes is the most simple consequence of Einstein's relativity theory. Dealing with relativity theory, this book details one of the most beautiful areas of mathematical physics; the theory of black holes. It represents a personal testament to the work of the author, who spent several years working-out the subject matter." --WorldCat.

Artificial Black Holes


Author: M. Novello,Matt Visser,G. E. Volovik

Publisher: World Scientific

ISBN: 9810248075

Category: Science

Page: 391

View: 1752

"Physicists are pondering the possibility of simulating black holes in the laboratory by means of various "analog models". These analog models, typically based on condensed matter physics, can be used to help us understand general relativity (Einstein's gravity); conversely, abstract techniques developed in general relativity can sometimes be used to help us understand certain aspects of condensed matter physics. This book contains 13 chapters - written by experts in general relativity, particle physics, and condensed matter physics - that explore various aspects of this two-way traffic."--BOOK JACKET."Physicists are pondering the possibility of simulating black holes in the laboratory by means of various "analog models". These analog models, typically based on condensed matter physics, can be used to help us understand general relativity (Einstein's gravity); conversely, abstract techniques developed in general relativity can sometimes be used to help us understand certain aspects of condensed matter physics. This book contains 13 chapters - written by experts in general relativity, particle physics, and condensed matter physics - that explore various aspects of this two-way traffic."--BOOK JACKET.

Black Hole Gravitohydromagnetics


Author: Brian Punsly

Publisher: Springer Science & Business Media

ISBN: 3540769579

Category: Science

Page: 399

View: 7951

Black hole gravitohydromagnetics (GHM) is developed from the rudiments to the frontiers of research in this book. GHM describes plasma interactions that combine the effects of gravity and a strong magnetic field, in the vicinity (ergosphere) of a rapidly rotating black hole. This topic was created in response to the astrophysical quest to understand the central engines of radio loud extragalactic radio sources. The theory describes a "torsional tug of war" between rotating ergospheric plasma and the distant asymptotic plasma that extracts the rotational inertia of the black hole. The recoil from the struggle between electromagnetic and gravitational forces near the event horizon is manifested as a powerful pair of magnetized particle beams (jets) that are ejected at nearly the speed of light. This second edition of the book is updated throughout and contains a completely new chapter discussing state of the art and results of numerical simulations of ergospheric disk jets occurring in magnetohydrodynamic accretion flows.

Trends in Black Hole Research


Author: Paul V. Kreitler

Publisher: Nova Publishers

ISBN: 9781594544750

Category: Science

Page: 184

View: 1013

A black hole is a point of extreme mass in spacetime with a radius, or event horizon, inside of which all electromagnetic radiation (including light) is trapped by gravity. A black hole is an extremely compact object, collapsed by gravity which has overcome electric and nuclear forces. It is believed that stars appreciably larger than the Sun, once they have exhausted all their nuclear fuel, collapse to form black holes: they are "black" because no light escapes their intense gravity. Material attracted to a black hole, though, gains enormous energy and can radiate part of it before being swallowed up. Some astronomers believe that enormously massive black holes exist in the centre of our galaxy and of other galaxies. This new book brings together leading research from throughout the world.

A Black Hole Is Not a Hole


Author: Carolyn Cinami DeCristofano

Publisher: Charlesbridge Publishing

ISBN: 1632896478

Category: Juvenile Nonfiction

Page: 80

View: 3819

Budding astronomers and scientists will love this humorous introduction to the extremely complex concept of black holes. With space facts and answers about the galaxies (ours, and others) A Black Hole is NOT a Hole takes readers on a ride that will stretch their minds around the phenomenon known as a black hole. In lively and text, the book starts off with a thorough explanation of gravity and the role it plays in the formation of black holes. Paintings by Michael Carroll, coupled with real telescopic images, help readers visualize the facts and ideas presented in the text, such as how light bends, and what a supernova looks like. Back matter includes a timeline which sums up important findings discussed throughout, while the glossary and index provide a quick point of reference for readers. Children and adults alike will learn a ton of spacey facts in this far-out book that’s sure to excite even the youngest of astrophiles.

Black Holes


Author: Jean-Pierre Luminet

Publisher: Cambridge University Press

ISBN: 9780521409063

Category: Science

Page: 312

View: 3054

Offers an accessible introduction to black holes requiring no mathematical background.

Black Holes

New Horizons


Author: Sean Alan Hayward

Publisher: World Scientific

ISBN: 9814425702

Category: Science

Page: 280

View: 8257

Black holes, once just fascinating theoretical predictions of how gravity warps space-time according to Einstein's theory, are now generally accepted as astrophysical realities, formed by post-supernova collapse, or as supermassive black holes mysteriously found at the cores of most galaxies, powering active galactic nuclei, the most powerful objects in the universe. Theoretical understanding has progressed in recent decades with a wider realization that local concepts should characterize black holes, rather than the global concepts found in textbooks. In particular, notions such as trapping horizon allow physically meaningful quantities and equations, describing how a black hole evolves. This has led to discoveries in fields as diverse as classical and numerical general relativity, differential geometry, thermodynamics, quantum field theory, and quantum gravity. There is heretofore no one volume which covers all the main aspects, so this volume collects together summaries and recent research, each chapter written by an expert or experts in a given field. This is intended for readers at a graduate level upwards, who wish to learn about the wide range of research concerning black holes.

Death by Black Hole: And Other Cosmic Quandaries


Author: Neil deGrasse Tyson

Publisher: W. W. Norton & Company

ISBN: 9780393113785

Category: Science

Page: 384

View: 5537

“[Tyson] tackles a great range of subjects . . . with great humor, humility, and—most important— humanity.” —Entertainment Weekly Loyal readers of the monthly "Universe" essays in Natural History magazine have long recognized Neil deGrasse Tyson's talent for guiding them through the mysteries of the cosmos with clarity and enthusiasm. Bringing together more than forty of Tyson's favorite essays, ?Death by Black Hole? explores a myriad of cosmic topics, from what it would be like to be inside a black hole to the movie industry's feeble efforts to get its night skies right. One of America's best-known astrophysicists, Tyson is a natural teacher who simplifies the complexities of astrophysics while sharing his infectious fascination for our universe.