Galaxies Quasars And Cosmology
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Galaxies Quasars And Cosmology
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Author : Lizhi Fang
language : en
Publisher: World Scientific
Release Date : 1985-12-01
Galaxies Quasars And Cosmology written by Lizhi Fang and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985-12-01 with Science categories.
This volume comprises lectures delivered at the First Equatorial School of Relativistic Astrophysics. It covers various topics related to observational and theoretical problems of galaxies, quasars and cosmology. The aim is to analyze current problems.
Beyond The Milky Way
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Author : Thornton Page
language : en
Publisher:
Release Date : 1969
Beyond The Milky Way written by Thornton Page and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Science categories.
Anthology of authoritative articles chronicling recent developments, techniques, and research enabling man to observe features of the universe as far as 8 billion light years away.
Quasars At All Cosmic Epochs
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Author : Paola Marziani
language : en
Publisher: Frontiers Media SA
Release Date : 2018-10-05
Quasars At All Cosmic Epochs written by Paola Marziani and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-05 with categories.
The last 50 years have seen a tremendous progress in the research on quasars. From a time when quasars were unforeseen oddities, we have come to a view that considers quasars as active galactic nuclei, with nuclear activity a coming-of-age experienced by most or all galaxies in their evolution. We have passed from a few tens of known quasars of the early 1970s to the 500,000 listed in the catalogue of the Data Release 14 of the Sloan Digital Sky Survey. Not surprisingly, accretion processes on the central black holes in the nuclei of galaxies — the key concept in our understanding of quasars and active nuclei in general — have gained an outstanding status in present-day astrophysics. Accretion produces a rich spectrum of phenomena in all bands of the electromagnetic spectrum. The power output of highly-accreting quasars has impressive effects on their host galaxies. All the improvement in telescope light gathering and in computing power notwithstanding, we still miss a clear connection between observational properties and theory for quasars, as provided, for example, by the H-R diagram for stars. We do not yet have a complete self-consistent view of nuclear activity with predictive power, as we do for main-sequence stellar sources. At the same time quasars offer many “windows open onto the unknown". On small scales, quasar properties depend on phenomena very close to the black hole event horizon. On large scales, quasars may effect evolution of host galaxies and their circum-galactic environments. Quasars’ potential to map the matter density of the Universe and help reconstruct the Universe’s spacetime geometry is still largely unexploited. The times are ripe for a critical assessment of our present knowledge of quasars as accreting black holes and of their evolution across the cosmic time. The foremost aim of this research topic is to review and contextualize the main observational scenarios following an empirical approach, to present and discuss the accretion scenario, and then to analyze how a closer connection between theory and observation can be achieved, identifying those aspects of our understanding that are still on a shaky terrain and are therefore uncertain knowledge. This research topic covers topics ranging from the nearest environment of the black hole, to the environment of the host galaxies of active nuclei, and to the quasars as markers of the large scale structure and of the geometry of spacetime of the Universe. The spatial domains encompass the accretion disk, the emission and absorption regions, circum-nuclear starbursts, the host galaxy and its interaction with other galaxies. Systematic attention is devoted to some key problems that remain outstanding and are clearly not yet solved: the existence of two quasar classes, radio quiet and radio loud, and in general, the systematic contextualization of quasar properties the properties of the central black hole, the dynamics of the accretion flow in the inner parsecs and the origin of the accretion matter, the quasars’ small and large scale environment, the feedback processes produced by the black hole into the host galaxy, quasar evolutionary patterns from seed black holes to the present-day Universe, and the use of quasars as cosmological standard candles. The timing is appropriate as we are now witnessing a growing body of results from major surveys in the optical, UV X, near and far IR, and radio spectral domains. Radio instrumentation has been upgraded to linear detector — a change that resembles the introduction of CCDs for optical astronomy — making it possible to study radio-quiet quasars at radio frequencies. Herschel and ALMA are especially suited to study the circum-nuclear star formation processes. The new generation of 3D magnetohydrodynamical models offers the prospective of a full physical modeling of the whole quasar emitting regions. At the same time, on the forefront of optical astronomy, applications of adaptive optics to long-slit spectroscopy is yielding unprecedented results on high redshift quasars. Other measurement techniques like 2D and photometric reverberation mapping are also yielding an unprecedented amount of data thanks to dedicated experiments and instruments. Thanks to the instrumental advances, ever growing computing power as well as the coming of age of statistical and analysis techniques, the smallest spatial scales are being probed at unprecedented resolution for wide samples of quasars. On large scales, feedback processes are going out of the realm of single-object studies and are entering into the domain of issues involving efficiency and prevalence over a broad range of cosmic epochs. The Research Topic "Quasars at all Cosmic Epochs" collects a large fraction of the contributions presented at a meeting held in Padova, sponsored jointly by the National Institute for Astrophysics, the Padova Astronomical Observatory, the Department of Physics and Astronomy of the University of Padova, and the Instito de Astrofísica de Andalucía (IAA) of the Consejo Superiór de Investigación Cientifica (CSIC). The meeting has been part of the events meant to celebrate the 250th anniversary of the foundation of the Padova Observatory.
Galaxies And Cosmology
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Author : F. Combes
language : en
Publisher: Springer
Release Date : 1995
Galaxies And Cosmology written by F. Combes and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Science categories.
Unique in its breadth of coverage and level of presentation, this textbook examines the nature of galaxies, extragalactic objects, the large-scale structure of the Universe, and cosmology more closely than general textbooks on astronomy, while still remaining comprehensible for advanced undergraduate students. One or several chapters are devoted to the following: the formation, classification and morphology of galaxies; the interactions between galaxies; the galactic interstellar medium; galactic kinematics; elliptical, spiral, and barred spiral galaxies; extragalactic radio sources, quasars, their line spectra, and other active galactic nuclei; the Universe as a whole.
Quasars And Galaxies In A New Cosmology
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Author : Borys Abramenko
language : en
Publisher:
Release Date : 1980
Quasars And Galaxies In A New Cosmology written by Borys Abramenko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Cosmology categories.
Quasars Redshifts And Controversies
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Author : Halton C. Arp
language : en
Publisher: Cambridge University Press
Release Date : 1988-09-29
Quasars Redshifts And Controversies written by Halton C. Arp and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988-09-29 with Science categories.
Contests the 'establishment' view of quasars as the most distant objects in the universe.
Galaxies And Cosmology
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Author : Francoise COMBES
language : en
Publisher: Springer
Release Date : 2010-12-01
Galaxies And Cosmology written by Francoise COMBES and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-12-01 with Science categories.
Unique in its breadth of coverage and level of presentation, this revised textbook provides more on the nature of galaxies, extragalactic objects, the large-scale structure of the Universe, and cosmology than is available in general textbooks on astronomy. It remains, however, accessible to advanced undergraduate students. One or more chapters are devoted to each of the following: the classification and morphology of galaxies; the galactic interstellar medium; galactic kinematics; elliptical, spiral, and barred spiral galaxies; the interactions between galaxies; extragalactic radio sources, quasars and their line spectra, and other active galactic nuclei; the formation of galaxies; the Universe as a whole; and cosmology.
Galaxies And Cosmology
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Author : Francoise Combes
language : en
Publisher: Springer
Release Date : 2001-12-04
Galaxies And Cosmology written by Francoise Combes and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-12-04 with Science categories.
Unique in its breadth of coverage and level of presentation, this revised textbook provides more on the nature of galaxies, extragalactic objects, the large-scale structure of the Universe, and cosmology than is available in general textbooks on astronomy. It remains, however, accessible to advanced undergraduate students. One or more chapters are devoted to each of the following: the classification and morphology of galaxies; the galactic interstellar medium; galactic kinematics; elliptical, spiral, and barred spiral galaxies; the interactions between galaxies; extragalactic radio sources, quasars and their line spectra, and other active galactic nuclei; the formation of galaxies; the Universe as a whole; and cosmology.
An Introduction To Galaxies And Cosmology
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Author : David John Adams
language : en
Publisher: Cambridge University Press
Release Date : 2004-05-31
An Introduction To Galaxies And Cosmology written by David John Adams and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-05-31 with Science categories.
This introductory textbook has been designed by a team of experts for elementary university courses in astronomy and astrophysics. It starts with a detailed discussion of the structure and history of our own Galaxy, the Milky Way, and goes on to give a general introduction to normal and active galaxies including models for their formation and evolution. The second part of the book provides an overview of the wide range of cosmological models and discusses the Big Bang and the expansion of the Universe. Written in an accessible style that avoids complex mathematics, and illustrated in colour throughout, this book is suitable for self-study and will appeal to amateur astronomers as well as undergraduate students. It contains numerous helpful learning features such as boxed summaries, student exercises with full solutions, and a glossary of terms. The book is also supported by a website hosting further teaching materials.
Black Holes Quasars And The Universe
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Author : Harry L. Shipman
language : en
Publisher:
Release Date : 1980
Black Holes Quasars And The Universe written by Harry L. Shipman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Science categories.
Discusses recent developments in astronomy and new theories about the universe, emphasizing discoveries about black holes, quasars, and pulsars.