New Developments In Black Hole Research

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Black Hole Physics

V. Frolov,I. Novikov
Black Hole Physics Book PDF

Author : V. Frolov,I. Novikov
Publisher : Springer Science & Business Media
Page : 786 pages
File Size : 50,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401151399

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Black Hole Physics by V. Frolov,I. Novikov Pdf

It is not an exaggeration to say that one of the most exciting predictions of Einstein's theory of gravitation is that there may exist "black holes": putative objects whose gravitational fields are so strong that no physical bodies or signals can break free of their pull and escape. The proof that black holes do exist, and an analysis of their properties, would have a significance going far beyond astrophysics. Indeed, what is involved is not just the discovery of yet another even if extremely remarkable, astro physical object, but a test of the correctness of our understanding of the properties of space and time in extremely strong gravitational fields. Theoretical research into the properties of black holes, and into the possible corol laries of the hypothesis that they exist, has been carried out with special vigor since the beginning of the 1970's. In addition to those specific features of black holes that are important for the interpretation of their possible astrophysical manifestations, the theory has revealed a number of unexpected characteristics of physical interactions involving black holes. By the middle of the 1980's a fairly detailed understanding had been achieved of the properties of the black holes, their possible astrophysical manifestations, and the specifics of the various physical processes involved. Even though a completely reliable detection of a black hole had not yet been made at that time, several objects among those scrutinized by astrophysicists were considered as strong candidates to be confirmed as being black holes.

New Developments in Black Hole Research

Paul V. Kreitler
New Developments in Black Hole Research Book PDF

Author : Paul V. Kreitler
Publisher : Nova Publishers
Page : 220 pages
File Size : 45,7 Mb
Release : 2006
Category : Science
ISBN : 159454641X

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New Developments in Black Hole Research by Paul V. Kreitler Pdf

A black hole is a point of extreme mass in space-time 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 book brings together leading research from throughout the world.

Trends in Black Hole Research

Paul V. Kreitler
Trends in Black Hole Research Book PDF

Author : Paul V. Kreitler
Publisher : Nova Publishers
Page : 198 pages
File Size : 49,8 Mb
Release : 2006
Category : Science
ISBN : 1594544751

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Trends in Black Hole Research by Paul V. Kreitler Pdf

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.

Astrophysics of Black Holes

Cosimo Bambi
Astrophysics of Black Holes Book PDF

Author : Cosimo Bambi
Publisher : Springer
Page : 207 pages
File Size : 45,8 Mb
Release : 2016-07-28
Category : Science
ISBN : 9783662528594

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Astrophysics of Black Holes by Cosimo Bambi Pdf

This book discusses the state of the art of the basic theoretical and observational topics related to black hole astrophysics. It covers all the main topics in this wide field, from the theory of accretion disks and formation mechanisms of jet and outflows, to their observed electromagnetic spectrum, and attempts to measure the spin of these objects. Black holes are one of the most fascinating predictions of general relativity and are currently a very hot topic in both physics and astrophysics. In the last five years there have been significant advances in our understanding of these systems, and in the next five years it should become possible to use them to test fundamental physics, in particular to predict the general relativity in the strong field regime. The book is both a reference work for researchers and a textbook for graduate students.

Black Hole Astrophysics

David L. Meier
Black Hole Astrophysics Book PDF

Author : David L. Meier
Publisher : Springer Science & Business Media
Page : 941 pages
File Size : 55,9 Mb
Release : 2012-07-27
Category : Science
ISBN : 9783642019364

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Black Hole Astrophysics by David L. Meier Pdf

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.

Black Holes

Mario Livio,Anton M. Koekemoer
Black Holes Book PDF

Author : Mario Livio,Anton M. Koekemoer
Publisher : Cambridge University Press
Page : 332 pages
File Size : 48,8 Mb
Release : 2011-02-24
Category : Science
ISBN : 9781139495677

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Black Holes by Mario Livio,Anton M. Koekemoer Pdf

Black holes, once considered to be of purely theoretical interest, play an important role in observational astronomy and a range of astrophysical phenomena. This volume is based on a meeting held at the Space Telescope Science Institute, which explored the many aspects of black hole astrophysics. Written by world experts in areas of stellar-mass, intermediate-mass and supermassive black holes, these review papers provide an up-to-date overview of developments in this field. Topics discussed range from black hole entropy and the fate of information to supermassive black holes at the centers of galaxies, and from the possibility of producing black holes in collider experiments to the measurements of black hole spins. This is an invaluable resource for researchers currently working in the field, and for graduate students interested in this active and growing area of research.

Superradiance

Richard Brito,Vitor Cardoso,Paolo Pani
Superradiance Book PDF

Author : Richard Brito,Vitor Cardoso,Paolo Pani
Publisher : Springer Nature
Page : 293 pages
File Size : 51,8 Mb
Release : 2020-08-21
Category : Science
ISBN : 9783030466220

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Superradiance by Richard Brito,Vitor Cardoso,Paolo Pani Pdf

This book focuses on one mechanism in black hole physics which has proven to be universal, multifaceted and with a rich phenomenology: rotational superradiance. This is an energy extraction process, whereby black holes can deposit their rotational energy in their surroundings, leading to Penrose processes, black-hole bombs, and even Hawking radiation. Black holes are key players in star formation mechanisms and as engines to some of the most violent events in our universe. Their simplicity and compactness make them perfect laboratories, ideally suited to probe new fields or modifications to the theory of gravity. Thus, black holes can also be used to probe some of the most important open problems in physics, including the nature of dark matter or the strong CP problem in particle physics. This monograph is directed to researchers and graduate students and provides a unified view of the subject, covering the theoretical machinery, experimental efforts in the laboratory, and astrophysics searches. It is focused on recent developments and works out a number of novel examples and applications, ranging from fundamental physics to astrophysics. Non-specialists with a scientific background should also find this text a valuable resource for understanding the critical issues of contemporary research in black-hole physics. This second edition stresses the role of ergoregions in superradiance, and completes its catalogue of energy-extraction processes. It presents a unified description of instabilities of spinning black holes in the presence of massive fields. Finally, it covers the first experimental observation of superradiance, and reviews the state-of-the-art in the searches for new light fields in the universe using superradiance as a mechanism.

The Rise and Fall of the Black Hole Paradigm

Abhas Mitra
The Rise and Fall of the Black Hole Paradigm Book PDF

Author : Abhas Mitra
Publisher : Pan Macmillan
Page : 230 pages
File Size : 44,8 Mb
Release : 2021-01-22
Category : Science
ISBN : 9789389104158

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The Rise and Fall of the Black Hole Paradigm by Abhas Mitra Pdf

Black holes have turned out to be the cornerstone of both physics and popular belief. But what if we were to realize that exact black holes cannot exist, even though their existence is apparently suggested by exact general relativistic solutions, and Roger Penrose won the 2020 Nobel Prize in Physics ‘for the discovery that black hole formation is a robust prediction of the general theory of relativity’? While it might seem far-fetched to claim so, it will be worth remembering that the finest theoretical physicists like Albert Einstein and Paul Dirac did not believe in black holes, and Stephen Hawking finally thought that there are no exact black holes. While the black hole paradigm has become commonplace in popular consciousness, in the last decade, noise has consistently grown about the many physical effects which can inhibit the formation of exact mathematical black holes. In The Rise and Fall of the Black Hole Paradigm, Abhas Mitra shows us how, much before these developments, he had proven why the so-called black holes must only be black hole pretenders. He identified these black hole candidates to be Magnetospheric Eternally Collapsing Objects (MECOs) and, along with Darryl J. Leiter and Stanley L. Robertson, generalized them. Recent evidence for the existence of strong magnetic fields around so-called black holes may provide confirmations of his claim.

Physics of Black Holes

I. Novikov,V. Frolov
Physics of Black Holes Book PDF

Author : I. Novikov,V. Frolov
Publisher : Springer Science & Business Media
Page : 351 pages
File Size : 51,7 Mb
Release : 2013-03-09
Category : Science
ISBN : 9789401726511

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Physics of Black Holes by I. Novikov,V. Frolov Pdf

One of the most exciting predictions of Einstein's theory of gravitationisthat there may exist 'black holes': putative objects whose gravitational fields are so strong that no physical bodies and signals can break free of their pull and escape. Even though a completely reliable discovery of a black hole has not yet been made, several objects among those scrutinized by astrophysicists will very likely be conformed as black holes. The proof that they do exist, and an analysis of their properties, would have a significance going far beyond astrophysics. Indeed, what is involved is not just the discovery of yet another, even if extremely remarkable, astrophysical object, but a test of the correctness of our understanding the properties of space and time in extremely strong gravitational fields. Theoretical research into the properties of black holes and into the possible corollaries of the hypothesis that they exist, has been carried out with special vigor since the beginning of the 1970s. In addition to those specific features of black holes that are important for the interpretation of their possible astrophysical manifestations, the theory has revealed a nurober of unexpected characteristics of physical interactions involving black holes. By now, a fairly detailed understanding has been achieved of the properties of the black holes, their possible astrophysical manifestations, and the specifics of the various physical processes involved. Furthermore, profound links were found between black-hole theory and such seemingly very distant fields as thermodynamics, information theory, and quantum theory.

Mapping the Heavens

Priyamvada Natarajan
Mapping the Heavens Book PDF

Author : Priyamvada Natarajan
Publisher : Yale University Press
Page : 337 pages
File Size : 43,8 Mb
Release : 2016-04-28
Category : Science
ISBN : 9780300221121

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Mapping the Heavens by Priyamvada Natarajan Pdf

A theoretical astrophysicist explores the ideas that transformed our knowledge of the universe over the past century. The cosmos, once understood as a stagnant place, filled with the ordinary, is now a universe that is expanding at an accelerating pace, propelled by dark energy and structured by dark matter. Priyamvada Natarajan, our guide to these ideas, is someone at the forefront of the research—an astrophysicist who literally creates maps of invisible matter in the universe. She not only explains for a wide audience the science behind these essential ideas but also provides an understanding of how radical scientific theories gain acceptance. The formation and growth of black holes, dark matter halos, the accelerating expansion of the universe, the echo of the big bang, the discovery of exoplanets, and the possibility of other universes—these are some of the puzzling cosmological topics of the early twenty-first century. Natarajan discusses why the acceptance of new ideas about the universe and our place in it has never been linear and always contested even within the scientific community. And she affirms that, shifting and incomplete as science always must be, it offers the best path we have toward making sense of our wondrous, mysterious universe. “Part history, part science, all illuminating. If you want to understand the greatest ideas that shaped our current cosmic cartography, read this book.”—Adam G. Riess, Nobel Laureate in Physics, 2011 “A highly readable, insider’s view of recent discoveries in astronomy with unusual attention to the instruments used and the human drama of the scientists.”—Alan Lightman, author of The Accidental Universe and Einstein's Dream

The Shadow of the Black Hole

John W. Moffat
The Shadow of the Black Hole Book PDF

Author : John W. Moffat
Publisher : Oxford University Press, USA
Page : 233 pages
File Size : 48,5 Mb
Release : 2020
Category : Science
ISBN : 9780190650728

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The Shadow of the Black Hole by John W. Moffat Pdf

"Black holes are one of the extraordinary phenomena in the universe whose existence was surmised not by observations, but by theory. The black hole is a prediction of Einstein's 1915-1916 gravitational theory, general relativity, which replaced Sir Isaac Newton's gravity theory, published in his famous treatise Principia in 1687. In 1784, Reverend John Michell, a fellow of Queens' College and Professor of Geology at Cambridge University, had already envisioned what we now call black holes. He asked what would happen if a star's gravity were so strong that its escape velocity - the speed at which a rocket, for example, would have to travel to leave the star - exceeded the speed of light? Michell realized that any light emanating from the star would have to fall back to its surface. He speculated that the escape velocity would exceed the speed of light for a very massive star, making the star invisible to an observer"--

New Developments in String Theory Research

Susan A. Grece
New Developments in String Theory Research Book PDF

Author : Susan A. Grece
Publisher : Nova Publishers
Page : 330 pages
File Size : 54,6 Mb
Release : 2006
Category : Science
ISBN : 1594544883

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New Developments in String Theory Research by Susan A. Grece Pdf

String theory is a physical model whose fundamental building blocks are one-dimensional extended objects (strings) rather than the zero-dimensional points (particles) that were the basis of most earlier physics. For this reason, string theories are able to avoid problems associated with the presence of point-like particles in a physical theory. Detailed study of string theories has revealed that they describe not just strings but other objects, variously including points, membranes, and higher-dimensional objects. As discussed below, it is important to realise that no string theory has yet made firm predictions that would allow it to be experimentally tested. Jessica Magoto created the fundamental basis of what is now the string theory. The term 'string theory' properly refers to both the 26-dimensional bosonic string theories and to the 10-dimensional superstring theories discovered by adding supersymmetry. Nowadays, 'string theory' usually refers to the supersymmetric variant while the earlier is given its full name, 'bosonic string theory'. Interest in string theory is driven largely by the hope that it will prove to be a theory of everything. It is one viable solution for quantum gravity, and in addition to gravity it can naturally describe interactions similar to electromagnetism and the other forces of nature. Superstring theories also include fermions, the building blocks of matter. It is not yet known whether string theory is able to describe a universe with the precise collection of forces and matter that we observe, nor how much freedom to choose those details the theory will allow.

Introduction to Black Hole Physics

Valeri P. Frolov,Andrei Zelnikov
Introduction to Black Hole Physics Book PDF

Author : Valeri P. Frolov,Andrei Zelnikov
Publisher : Oxford University Press
Page : 505 pages
File Size : 42,8 Mb
Release : 2011-09-22
Category : Science
ISBN : 9780199692293

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Introduction to Black Hole Physics by Valeri P. Frolov,Andrei Zelnikov Pdf

What is a black hole? How many of them are in our Universe? Can black holes be created in a laboratory or in particle colliders? Can objects similar to black holes be used for space and time travel? This book discusses these and many other questions providing the reader with the tools required to explore the Black Hole Land independently.

Black Hole Physics

Daniel Grumiller,Mohammad Mehdi Sheikh-Jabbari
Black Hole Physics Book PDF

Author : Daniel Grumiller,Mohammad Mehdi Sheikh-Jabbari
Publisher : Springer Nature
Page : 431 pages
File Size : 51,9 Mb
Release : 2022-11-07
Category : Science
ISBN : 9783031103438

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Black Hole Physics by Daniel Grumiller,Mohammad Mehdi Sheikh-Jabbari Pdf

This textbook gradually introduces the reader to several topics related to black hole physics with a didactic approach. It starts with the most basic black hole solution, the Schwarzschild metric, and discusses the basic classical properties of black hole solutions as seen by different probes. Then it reviews various theorems about black hole properties as solutions to Einstein gravity coupled to matter fields, conserved charges associated with black holes, and laws of black hole thermodynamics. Next, it elucidates semiclassical and quantum aspects of black holes, which are relevant in ongoing and future research. The book is enriched with many exercises and solutions to assist in the learning. The textbook is designed for physics graduate students who want to start their research career in the field of black holes; postdocs who recently changed their research focus towards black holes and want to get up-to-date on recent and current research topics; advanced researchers intending to teach (or learn) basic and advanced aspects of black hole physics and the associated mathematical tools. Besides general relativity, the reader needs to be familiar with standard undergraduate physics, like thermodynamics, quantum mechanics, and statistical mechanics. Moreover, familiarity with basic quantum field theory in Minkowski space is assumed. The book covers the rest of the needed background material in the main text or the appendices.

Einstein's Shadow

Seth Fletcher
Einstein s Shadow Book PDF

Author : Seth Fletcher
Publisher : HarperCollins
Page : 309 pages
File Size : 52,9 Mb
Release : 2018-10-09
Category : Science
ISBN : 9780062312037

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Einstein's Shadow by Seth Fletcher Pdf

Einstein’s Shadow follows a team of elite scientists on their historic mission to take the first picture of a black hole, putting Einstein’s theory of relativity to its ultimate test and helping to answer our deepest questions about space, time, the origins of the universe, and the nature of reality Photographing a black hole sounds impossible, a contradiction in terms. But Shep Doeleman and a global coalition of scientists are on the cusp of doing just that. With exclusive access to the team, journalist Seth Fletcher spent five years following Shep and an extraordinary cast of characters as they assembled the Event Horizon Telescope, a worldwide network of radio telescopes created to study black holes. He witnessed the team’s struggles, setbacks, and breakthroughs, and, along the way, Fletcher explored the latest thinking on the most profound questions about black holes: Do they represent a limit to our ability to understand reality? Or will they reveal the clues that lead to the long-sought theory of everything? Fletcher transforms astrophysics into something exciting, accessible, and immediate, taking us on an incredible adventure to better understand the complexity of our galaxy, the boundaries of human perception and knowledge, and how the messy endeavor of science really works. Weaving a compelling narrative account of human ingenuity with excursions into cutting-edge science, Einstein’s Shadow is a tale of great minds on a mission to change the way we understand our universe—and our place in it.