Observational Evidence For Black Holes In The Universe

Author : Sandip K. Chakrabarti
Publisher : Springer Science & Business Media
Page : 411 pages
File Size : 40,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401147507

Get Book

Observational Evidence for Black Holes in the Universe by Sandip K. Chakrabarti Pdf

A conference on `Observational Evidence for Black Holes in the Universe' was held in Calcutta during January 10-17, 1998. This was the first time that experts had gathered to debate and discuss topics such as: Should black holes exist? If so, how to detect them? Have we found them? This book is the essence of this gathering. Black holes are enigmatic objects since it is impossible to locate them through direct observations. State-of-the-art theoretical works and numerical simulations have given us enough clues of what to look for. Observations, from both ground and space-based missions, have been able to find these tell-tale signatures. This book is a compendium of our present knowledge about these theories and observations. Combined, they give a thorough idea of whether black holes, galactic as well as extragalactic, have been detected or not. Forty-one experts of the subject have contributed to this volume to make it the most comprehensive to date.

Author : Sandip K. Chakrabarti,Archan S. Majumdar
Publisher : American Institute of Physics
Page : 438 pages
File Size : 40,6 Mb
Release : 2008-10-16
Category : Science
ISBN : UCSD:31822036964641

Get Book

Observational Evidence for Black Holes in the Universe by Sandip K. Chakrabarti,Archan S. Majumdar Pdf

The main objective of the conference was to focus on whether we have enough evidence for existence of black holes, starting from primordial to galactic, extragalactic. Experts from various communities such as, quasars of several billion solar mass to nano quasars of a few solar mass, presented their views and were unanimous that matter has been found to disappear behind event horizons and that the “standard” view of accretion requires major changes to understand the observations. These proceedings contains the most recent results on black hole astrophysics and astronomy, the multiwavelength satellite observations and on future space missions. Recent findings on the relationship among the compact sources and Gamma-ray bursts have been presented.

Author : Robert M. Wald
Publisher : University of Chicago Press
Page : 300 pages
File Size : 54,6 Mb
Release : 1998
Category : Science
ISBN : 0226870359

Get Book

Black Holes and Relativistic Stars by Robert M. Wald Pdf

A comprehensive summary of progress made during the past decade on the theory of black holes and relativistic stars, this collection includes discussion of structure and oscillations of relativistic stars, the use of gravitational radiation detectors, observational evidence for black holes, cosmic censorship, numerical work related to black hole collisions, the internal structure of black holes, black hole thermodynamics, information loss and other issues related to the quantum properties of black holes, and recent developments in the theory of black holes in the context of string theory. Volume contributors: Valeria Ferrari, John L. Friedman, James B. Hartle, Stephen W. Hawking, Gary T. Horowitz, Werner Israel, Roger Penrose, Martin J. Rees, Rafael D. Sorkin, Saul A. Teukolsky, Kip S. Thorne, and Robert M. Wald.

Author : Cosimo Bambi
Publisher : Springer
Page : 0 pages
File Size : 41,8 Mb
Release : 2023-07-04
Category : Science
ISBN : 9819915953

Get Book

Regular Black Holes by Cosimo Bambi Pdf

Black holes are one of the most fascinating predictions of general relativity. They are the natural product of the complete gravitational collapse of matter and today we have a body of observational evidence supporting the existence of black holes in the Universe. However, general relativity predicts that at the center of black holes there are spacetime singularities, where predictability is lost and standard physics breaks down. It is widely believed that spacetime singularities are a symptom of the limitations of general relativity and must be solved within a theory of quantum gravity. Since we do not have yet any mature and reliable candidate for a quantum gravity theory, researchers have studied toy-models of singularity-free black holes and of singularity-free gravitational collapses in order to explore possible implications of the yet unknown theory of quantum gravity. This book reviews all main models of regular black holes and non-singular gravitational collapses proposed in the literature, and discuss the theoretical and observational implications of these scenarios.

Author : Riccardo Giacconi,L. Kaper,E.P.J. van den Heuvel
Publisher : Springer Science & Business Media
Page : 408 pages
File Size : 46,8 Mb
Release : 2001-02-26
Category : Science
ISBN : 3540415815

Get Book

Black Holes in Binaries and Galactic Nuclei: Diagnostics, Demography and Formation by Riccardo Giacconi,L. Kaper,E.P.J. van den Heuvel Pdf

The observational evidence for the existence of black holes has grown significantly over recent decades. Stellar-mass black holes are detected as X-ray sources in binary systems, while supermassive black holes, with masses more than a million times the mass of the Sun, lurk in the nuclei of galaxies. These proceedings provide a useful and up-to-date overview of the observations of black holes in binaries, in the center of the Milky Way, and in the nuclei of galaxies, presented by leading expert astronomers. Special attention is given to the formation (including the recent evidence from gamma-ray bursts), physical properties, and demographics of black holes.

Author : Andrea Merloni,Sergei V. Nayakshin,Rashid A. Sunyaev
Publisher : Springer Science & Business Media
Page : 524 pages
File Size : 45,7 Mb
Release : 2005-04-25
Category : Science
ISBN : 3540252754

Get Book

Growing Black Holes: Accretion in a Cosmological Context by Andrea Merloni,Sergei V. Nayakshin,Rashid A. Sunyaev Pdf

Supermassive black holes are now believed to play an important role in the evolution of the Universe. Every respectable galaxy hosts in its center a black hole that appears to regulate the growth of the galaxy itself. In this book, leading experts in the field review the most recent theoretical and observational results on the following topics: - formation and growth of the first black holes in the Universe and their role in the formation and evolution of galaxies - the physics of black-hole accretion and the production of relativistic jets - binary black-hole mergers and gravitational radiation. Theoretical work is supplemented by the most recent exciting results from space and ground based observatories. This volume is useful research and reference tool for the entire astrophysical community.

Author : Mario Livio,Anton M. Koekemoer
Publisher : Cambridge University Press
Page : 332 pages
File Size : 41,5 Mb
Release : 2011-02-24
Category : Science
ISBN : 9781139495677

Get Book

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.

Author : Michael Hawkins
Publisher : Addison Wesley Publishing Company
Page : 264 pages
File Size : 45,5 Mb
Release : 1997-09-16
Category : Science
ISBN : UOM:39015060960849

Get Book

Hunting Down The Universe by Michael Hawkins Pdf

An astronomer at the Royal Observatory in Edinburgh, Hawkins recounts the train of 20th-century astronomy and his own thought that led him to conclude in 1993 that the 99% of the universe's mass that seems to be missing is in fact contained in tiny primordial black holes. He also looks at the political, social, and philosophical reasons that his theory has yet to be widely accepted by his colleagues. Annotation copyrighted by Book News, Inc., Portland, OR

Author : A.J. Barger
Publisher : Springer Science & Business Media
Page : 310 pages
File Size : 40,8 Mb
Release : 2013-11-09
Category : Science
ISBN : 9781402024719

Get Book

Supermassive Black Holes in the Distant Universe by A.J. Barger Pdf

Quasars, and the menagerie of other galaxies with "unusual nuclei", now collectively known as Active Galactic Nuclei or AGN, have, in one form or another, sparked the interest of astronomers for over 60 years. The only known mechanism that can explain the staggering amounts of energy emitted by the innermost regions of these systems is gravitational energy release by matter falling towards a supermassive black hole --- a black hole whose mass is millions to billions of times the mass of our Sun. AGN emit radiation at all wavelengths. X-rays originating at a distance of a few times the event horizon of the black hole are the emissions closest to the black hole that we can detect; thus, X-rays directly reveal the presence of active supermassive black holes. Oftentimes, however, the supermassive black holes that lie at the centers of AGN are cocooned in gas and dust that absorb the emitted low energy X-rays and the optical and ultraviolet light, hiding the black hole from view at these wavelengths. Until recently, this low-energy absorption presented a major obstacle in observational efforts to map the accretion history of the universe. In 1999 and 2000, the launches of the Chandra and XMM-Newton X-ray Observatories finally broke the impasse. The impact of these observatories on X-ray astronomy is similar to the impact that the Hubble Space Telescope had on optical astronomy. The astounding new data from these observatories have enabled astronomers to make enormous advances in their understanding of when accretion occurs.

Author : Kirill A. Bronnikov,Sergei G. Rubin
Publisher : World Scientific
Page : 442 pages
File Size : 49,6 Mb
Release : 2013
Category : Science
ISBN : 9789814374200

Get Book

Black Holes, Cosmology and Extra Dimensions by Kirill A. Bronnikov,Sergei G. Rubin Pdf

Assuming foundational knowledge of special and general relativity, this book guides the reader on issues surrounding black holes, wormholes and cosmology. Half of it is devoted to local strong field configurations (black holes and wormholes) in general relativity and the most relevant of alternative theories: scalar tensor, f(R) and multidimensional theories. The remaining half is on cosmology, including inflation and a unified description of the whole evolution of the universe. Much of the content is new in book publications, because it was previously found only in journal publications, e.g. regarding regular black holes, various scalar field solutions, wormholes and their stability. The original approach to nonlinear multidimensional gravity that is able to construct a unique perspective describing different phenomena is highlighted. Expository work is conducted for mechanism of symmetries and fundamental constants formation.

Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 48,7 Mb
Release : 2024-06-14
Category : Presbyterian
ISBN : OCLC:81710072

Get Book

Interments at Frankfort Springs Presbyterian Church Cemetery, Frankfort Springs, Beaver County, Pa. 1964 by Anonim Pdf

Author : Francesco Haardt,Vittorio Gorini,Ugo Moschella,Aldo Treves,Monica Colpi
Publisher : Springer
Page : 314 pages
File Size : 49,8 Mb
Release : 2015-11-03
Category : Science
ISBN : 9783319194165

Get Book

Astrophysical Black Holes by Francesco Haardt,Vittorio Gorini,Ugo Moschella,Aldo Treves,Monica Colpi Pdf

Based on graduate school lectures in contemporary relativity and gravitational physics, this book gives a complete and unified picture of the present status of theoretical and observational properties of astrophysical black holes. The chapters are written by internationally recognized specialists. They cover general theoretical aspects of black hole astrophysics, the theory of accretion and ejection of gas and jets, stellar-sized black holes observed in the Milky Way, the formation and evolution of supermassive black holes in galactic centers and quasars as well as their influence on the dynamics in galactic nuclei. The final chapter addresses analytical relativity of black holes supporting theoretical understanding of the coalescence of black holes as well as being of great relevance in identifying gravitational wave signals. With its introductory chapters the book is aimed at advanced graduate and post-graduate students, but it will also be useful for specialists.

Author : Andrea Merloni,Sergei V. Nayakshin,Rashid A. Sunyaev
Publisher : Springer
Page : 506 pages
File Size : 53,5 Mb
Release : 2009-09-02
Category : Science
ISBN : 3540808833

Get Book

Growing Black Holes: Accretion in a Cosmological Context by Andrea Merloni,Sergei V. Nayakshin,Rashid A. Sunyaev Pdf

Supermassive black holes are now believed to play an important role in the evolution of the Universe. Every respectable galaxy hosts in its center a black hole that appears to regulate the growth of the galaxy itself. In this book, leading experts in the field review the most recent theoretical and observational results on the following topics: - formation and growth of the first black holes in the Universe and their role in the formation and evolution of galaxies - the physics of black-hole accretion and the production of relativistic jets - binary black-hole mergers and gravitational radiation. Theoretical work is supplemented by the most recent exciting results from space and ground based observatories. This volume is useful research and reference tool for the entire astrophysical community.

Author : V. Frolov,I. Novikov
Publisher : Springer Science & Business Media
Page : 800 pages
File Size : 43,7 Mb
Release : 1998-11-30
Category : Science
ISBN : 0792351452

Get Book

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

Introduces the physics of black holes and the methods employed in it, and reviews the main results of this branch of physics. Frolov (physics, U. of Alberta) and Novikov (theoretical astrophysics, U. of Copenhagen) focus on questions that have been answered relatively recently. Among the topics treated are: space-time of stationary black holes, general theory of black holes, black hole perturbations, numerics, 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. Appendices cover mathematical aspects of general relativity and black holes and quantum field theory in curved spacetime. Annotation copyrighted by Book News, Inc., Portland, OR

Author : L. Kaper,E.P.J. van den Heuvel,P.A. Woudt
Publisher : Springer
Page : 379 pages
File Size : 55,5 Mb
Release : 2014-08-23
Category : Science
ISBN : 3662307995

Get Book

Black Holes in Binaries and Galactic Nuclei: Diagnostics, Demography and Formation by L. Kaper,E.P.J. van den Heuvel,P.A. Woudt Pdf

The observational evidence for the existence of black holes has grown significantly over recent decades. Stellar-mass black holes are detected as X-ray sources in binary systems, while supermassive black holes, with masses more than a million times the mass of the Sun, lurk in the nuclei of galaxies. These proceedings provide a useful and up-to-date overview of the observations of black holes in binaries, in the center of the Milky Way, and in the nuclei of galaxies, presented by leading expert astronomers. Special attention is given to the formation (including the recent evidence from gamma-ray bursts), physical properties, and demographics of black holes.