Agn Surveys

Author : R. MAIOLINO (Ed)
Publisher : World Scientific
Page : 459 pages
File Size : 50,6 Mb
Release : 2004
Category : Science
ISBN : 9789812560490

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Multiwavelength AGN Surveys by R. MAIOLINO (Ed) Pdf

The huge amount of data obtained by surveys in all wavebands, from radio to X-rays, has allowed major progress in the understanding of Active Galactic Nuclei and of their cosmic evolution. This book contains the proceedings of a conference intended to give a broad overview of the recent results obtained by recent AGN surveys over the whole electromagnetic spectrum. Topics which were discussed during the conference and are included in this volume are: AGN evolution, contribution to the cosmic background, AGN luminosity functions in different wavebands, multiwavelength properties of AGN, unified model and unconventional AGN, connection with the host galaxies, co-evolution of AGN and galaxies, implications for the local density of supermassive black holes. Future AGN surveys planned with forthcoming new observational facilities are also included.The proceedings have been selected for coverage in: ? Index to Scientific & Technical Proceedings? (ISTP? / ISI Proceedings)? Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)? CC Proceedings ? Engineering & Physical Sciences

Author : Richard F. Green,Ė. E. Khachiki︠a︡n,David Bruce Sanders
Publisher : Unknown
Page : 490 pages
File Size : 55,8 Mb
Release : 2002
Category : Science
ISBN : UOM:39015052668111

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AGN Surveys by Richard F. Green,Ė. E. Khachiki︠a︡n,David Bruce Sanders Pdf

Author : Hagai Netzer
Publisher : Cambridge University Press
Page : 369 pages
File Size : 44,5 Mb
Release : 2013-09-16
Category : Science
ISBN : 9781107021518

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The Physics and Evolution of Active Galactic Nuclei by Hagai Netzer Pdf

A comprehensive introduction to the theory underpinning our study of active galactic nuclei and the ways we observe them.

Author : Spiros Cotsakis,Eleftherios Papantonopoulos
Publisher : Springer
Page : 480 pages
File Size : 44,9 Mb
Release : 2008-01-11
Category : Science
ISBN : 9783540480259

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Cosmological Crossroads by Spiros Cotsakis,Eleftherios Papantonopoulos Pdf

This book has grown out of lectures held at a summer school on cosmology, in response to an ever increasing need for an advanced textbook that addresses the needs of both postgraduate students and nonspecialist researchers from various disciplines ranging from mathematical physics to observational astrophysics. Bridging the gap between standard textbook material in cosmology and the forefront of research, this book also constitutes a modern source of reference for the experienced researcher in classical and quantum cosmology.

Author : Julian H. Krolik
Publisher : Princeton University Press
Page : 632 pages
File Size : 42,9 Mb
Release : 1999-01-10
Category : Science
ISBN : 0691011516

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Active Galactic Nuclei by Julian H. Krolik Pdf

This is the first comprehensive treatment of active galactic nuclei--the cosmic powerhouses at the core of many distant galaxies. The term active galactic nuclei refers to quasars, radio galaxies, Seyfert galaxies, blazars, and related objects, all of which are believed to share a similar central engine--a supermassive black hole many times the mass of the Sun. Astrophysicists have studied these phenomena for the past several decades and have begun to develop a consensus about many of their properties and internal mechanisms. Julian Krolik, one of the world's leading authorities on the subject, sums up leading ideas from across the entire range of research, making this book an invaluable resource for astronomers, physicists interested in applications of the theory of gravitation, and graduate students. Krolik begins by addressing basic questions about active galactic nuclei: What are they? How can they be found? How do they evolve? He assesses the evidence for massive black holes and considers how they generate power by accretion. He discusses X-ray and g-ray emission, radio emission and jets, emission and absorption lines, anisotropic appearance, and the relationship between an active nucleus and its host galaxy. He explores the mysteries of what ignites, fuels, and extinguishes active galactic nuclei, and concludes with a general review of where the field now stands. The book is unique in paying careful attention to relevant physics as well as astronomy, reflecting in part the importance of general relativity to understanding active galactic nuclei. Clear, authoritative, and detailed, this is crucial reading for anyone interested in one of the most dynamic areas of astrophysics today.

Author : Brian J. McLean,Daniel A. Golombek,Jeffrey J.E. Hayes,Harry E. Payne
Publisher : Springer Science & Business Media
Page : 508 pages
File Size : 46,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400914858

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New Horizons from Multi-Wavelength Sky Surveys by Brian J. McLean,Daniel A. Golombek,Jeffrey J.E. Hayes,Harry E. Payne Pdf

Large area sky surveys are now a reality in the radio, IR, optical and X-ray passbands. In the next few years, new surveys using optical, UV and IR mosaic cameras with high throughput digital detectors will expand the dynamic range and accuracy of photometry and astrometry of objects over a significant fraction of the entire sky. Parallel X-ray and radio surveys over the same areas will produce astronomical image and spectroscopic databases of unprecedented size and quality. The combined data sets will provide significant new constraints on star formation, stellar dynamics, Galactic structure, the evolution of galaxies and large scale structure, as well as new opportunities to identify rare objects in the solar system and the Galaxy. Large area surveys have formidable data acquisition, processing, archiving, and data distribution demands and this meeting provided a forum for sharing experiences amongst workers specializing in different wavebands as well as discussing how multiband observations can reveal fundamental relationships in our understanding of the Universe.

Author : Volker Beckmann,Chris Shrader
Publisher : John Wiley & Sons
Page : 390 pages
File Size : 43,6 Mb
Release : 2013-08-29
Category : Science
ISBN : 9783527666805

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Active Galactic Nuclei by Volker Beckmann,Chris Shrader Pdf

Active Galactic Nuclei This AGN textbook gives an overview on the current knowledge of the Active Galacitc Nuclei phenomenon. The spectral energy distribution will be discussed, pointing out what can be observed in different wavebands. The different physical models are presented together with formula important for the understanding of AGN physics. Furthermore, the authors discuss the AGN with respect to its environment, host galaxy, feedback in galaxies and in clusters of galaxies, variability, etc. and finally the cosmological evolution of the AGN phenomenon. This book includes phenomena based on new results in the X-Ray and gamma-ray domain from new telescopes such as Chandra, XMM-Newton, the Fermi Gamma-Ray Space Telescope, and the VHE regime not mentioned so far in AGN books. Those and other new developments as well as simulations of AGN merging events and formations, enabled through latest super-computing capabilities. From the contents: The observational picture of AGN Radiative processes The central engine AGN types and unification AGN through the electromagnetic spectrum AGN variability Environment Quasars and cosmology Formation, evolution and the ultimate fate of AGN What we do not know (yet)

Author : Gordon T. Richards,Gordon Todd Richards,Patrick B. Hall
Publisher : Unknown
Page : 544 pages
File Size : 48,8 Mb
Release : 2004
Category : Science
ISBN : UOM:39015061142991

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AGN Physics with the Sloan Digital Sky Survey by Gordon T. Richards,Gordon Todd Richards,Patrick B. Hall Pdf

Author : Christopher Mark Harrison
Publisher : Springer
Page : 193 pages
File Size : 47,8 Mb
Release : 2016-01-20
Category : Science
ISBN : 9783319284545

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Observational Constraints on the Influence of Active Galactic Nuclei on the Evolution of Galaxies by Christopher Mark Harrison Pdf

This prize-winning Ph.D. thesis by Chris Harrison adopts a multi-faceted approach to address the lack of decisive observational evidence, utilising large observational data sets from several world-leading telescopes. Developing several novel observational techniques, Harrison demonstrated that energetic winds driven by Active Galactic Nuclei (AGN) are found in a large number of galaxies, with properties in agreement with model predictions. One of the key unsolved problems in astrophysics is understanding the influence of AGN, the sites of growing supermassive black holes, on the evolution of galaxies. Leading theoretical models predict that AGN drive energetic winds into galaxies, regulating the formation of stars. However, until now, we have lacked the decisive observational evidence to confirm or refute these key predictions. Careful selection of targets allowed Harrison, to reliably place these detailed observations into the context of the overall galaxy population. However, in disagreement with the model predictions, Harrison showed that AGN have little global effect on star formation in galaxies. Theoretical models are now left with the challenge of explaining these results.

Author : Professor R. D. Blandford,Professor H. Netzer,Professor L. Woltjer,Dr. T. J.-L. Courvoisier,Professor M. Mayor
Publisher : Springer
Page : 289 pages
File Size : 42,6 Mb
Release : 2013-12-14
Category : Science
ISBN : 9783662398166

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Active Galactic Nuclei by Professor R. D. Blandford,Professor H. Netzer,Professor L. Woltjer,Dr. T. J.-L. Courvoisier,Professor M. Mayor Pdf

Author : Danielle Alloin,Rachel Johnson,Paulina Lira
Publisher : Springer
Page : 243 pages
File Size : 50,8 Mb
Release : 2006-09-07
Category : Science
ISBN : 9783540346210

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Physics of Active Galactic Nuclei at all Scales by Danielle Alloin,Rachel Johnson,Paulina Lira Pdf

This book contains a collection of lecture notes written by recognized experts in the field of Active Galactic Nuclei (AGN). The collection is aimed at providing both an introduction and at the same time an overview of the state-of-the-art of AGN research. This book also addresses the still not entirely understood link of an AGN with its host galaxy and also the related question of the birth and growth of massive black holes in the Universe.

Author : A.J. Barger
Publisher : Springer Science & Business Media
Page : 310 pages
File Size : 52,6 Mb
Release : 2013-11-09
Category : Science
ISBN : 9781402024719

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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 : Cosimo Bambi
Publisher : Springer Nature
Page : 5912 pages
File Size : 44,6 Mb
Release : 2024-07-03
Category : Electronic
ISBN : 9789811969607

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Handbook of X-ray and Gamma-ray Astrophysics by Cosimo Bambi Pdf

Author : Ajit K. Kembhavi,Jayant V. Narlikar
Publisher : Cambridge University Press
Page : 488 pages
File Size : 51,8 Mb
Release : 1999-03-11
Category : Science
ISBN : 0521479894

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Quasars and Active Galactic Nuclei by Ajit K. Kembhavi,Jayant V. Narlikar Pdf

The latest observations and theoretical models are combined in this clear, pedagogic textbook for advanced undergraduates and graduate students.

Author : Lodewijk Woltjer,G. Setti,J.-P. Swings
Publisher : Springer Science & Business Media
Page : 248 pages
File Size : 44,5 Mb
Release : 2001-07-17
Category : Science
ISBN : 3540421912

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Quasars, Agns, and Related Research Across 2000 by Lodewijk Woltjer,G. Setti,J.-P. Swings Pdf

The proceedings of the international conference held in honor or Lodewijk Woltjer, focus on the physics, origin and space distribution of AGNs and quasars and their relationship to the environment, a very wide subject which has attracted much of Lodewijk Wolter's research interest. A number of lectures were also dedicated to reviewing the recent observational advances and those that may be attained by the introduction of new and powerful astronomical instrumentation both from the ground and from space, in recognition of the central role played by L. Woltjer in the promotion of the ESO VLT and of his involvement in shaping ESA's space programme Horizon 2000+.