Quasar

Quasar
Author :
Publisher : Spectra
Total Pages : 207
Release :
ISBN-10 : 0553568868
ISBN-13 : 9780553568868
Rating : 4/5 (68 Downloads)

Synopsis Quasar by : Jamil Nasir

Hired to care for the psychotic heiress Quasar Zant, psychiatric technician Ted Karmade is catapulted into the dizzying world of unrepressed ambition and exposed to deadly secrets that test his survival. Original.

Quasar, Quasar, Burning Bright

Quasar, Quasar, Burning Bright
Author :
Publisher : Doubleday Books
Total Pages : 248
Release :
ISBN-10 : UCAL:B4534520
ISBN-13 :
Rating : 4/5 (20 Downloads)

Synopsis Quasar, Quasar, Burning Bright by : Isaac Asimov

Seventeen essays in which the amazing author once again displays that he is the master of all he surveys ...

Fifty Years of Quasars

Fifty Years of Quasars
Author :
Publisher : Springer
Total Pages : 0
Release :
ISBN-10 : 3642443842
ISBN-13 : 9783642443848
Rating : 4/5 (42 Downloads)

Synopsis Fifty Years of Quasars by : Mauro D'Onofrio

The 50th anniversary of the discovery of quasars in 1963 presents an interesting opportunity to ask questions about the current state of quasar research. Formatted as a series of interviews with noted researchers in the field, each of them asked to address a specific set of questions covering topics selected by the editors, this book deals with the historical development of quasar research and discusses how advances in instrumentation and computational capabilities have benefitted quasar astronomy and have changed our basic understanding of quasars. In the last part of the book the interviews address the current topic of the role of quasars in galaxy evolution. They summarise open issues in understanding active galactic nuclei and quasars and present an outlook regarding what future observational facilities both on the ground and in space might reveal. Its interview format, the fascinating topic of quasars and black holes, and the lively recollections and at times controversial views of the contributors make this book both rewarding and a pleasure to read!

Fifty Years of Quasars

Fifty Years of Quasars
Author :
Publisher : Springer Science & Business Media
Total Pages : 613
Release :
ISBN-10 : 9783642275647
ISBN-13 : 3642275648
Rating : 4/5 (47 Downloads)

Synopsis Fifty Years of Quasars by : Mauro D'Onofrio

The 50th anniversary of the discovery of quasars in 1963 presents an interesting opportunity to ask questions about the current state of quasar research. Formatted as a series of interviews with noted researchers in the field, each of them asked to address a specific set of questions covering topics selected by the editors, this book deals with the historical development of quasar research and discusses how advances in instrumentation and computational capabilities have benefitted quasar astronomy and have changed our basic understanding of quasars. In the last part of the book the interviews address the current topic of the role of quasars in galaxy evolution. They summarise open issues in understanding active galactic nuclei and quasars and present an outlook regarding what future observational facilities both on the ground and in space might reveal. Its interview format, the fascinating topic of quasars and black holes, and the lively recollections and at times controversial views of the contributors make this book both rewarding and a pleasure to read!

Quasar Astronomy

Quasar Astronomy
Author :
Publisher : Cambridge University Press
Total Pages : 236
Release :
ISBN-10 : 0521356741
ISBN-13 : 9780521356749
Rating : 4/5 (41 Downloads)

Synopsis Quasar Astronomy by : Daniel W. Weedman

A current account of quasar astronomy that not only summarizes existing results from various techniques but refers to the potentialities of new instruments. All aspects of quasar spectroscopy are discussed and techniques for analyzing quasar data are summarized.

Quasars, Redshifts and Controversies

Quasars, Redshifts and Controversies
Author :
Publisher : Cambridge University Press
Total Pages : 220
Release :
ISBN-10 : 0521363144
ISBN-13 : 9780521363143
Rating : 4/5 (44 Downloads)

Synopsis Quasars, Redshifts and Controversies by : Halton C. Arp

Contests the 'establishment' view of quasars as the most distant objects in the universe.

What Are Quasars?

What Are Quasars?
Author :
Publisher : Larry Slawson via PublishDrive
Total Pages : 19
Release :
ISBN-10 : PKEY:6610000173822
ISBN-13 :
Rating : 4/5 (22 Downloads)

Synopsis What Are Quasars? by : Larry Slawson

This eBook explores the deep-space objects commonly known as "quasars," and provides its readers with a fundamental understanding for both their origins and purpose in the universe at large.

Quasars and Active Galactic Nuclei

Quasars and Active Galactic Nuclei
Author :
Publisher : Cambridge University Press
Total Pages : 488
Release :
ISBN-10 : 0521479894
ISBN-13 : 9780521479899
Rating : 4/5 (94 Downloads)

Synopsis Quasars and Active Galactic Nuclei by : Ajit K. Kembhavi

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

Quasars at All Cosmic Epochs

Quasars at All Cosmic Epochs
Author :
Publisher : Frontiers Media SA
Total Pages : 447
Release :
ISBN-10 : 9782889456048
ISBN-13 : 2889456048
Rating : 4/5 (48 Downloads)

Synopsis Quasars at All Cosmic Epochs by : Paola Marziani

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.

Quasar Hosts

Quasar Hosts
Author :
Publisher : Springer Science & Business Media
Total Pages : 348
Release :
ISBN-10 : 9783540696483
ISBN-13 : 3540696482
Rating : 4/5 (83 Downloads)

Synopsis Quasar Hosts by : David L. Clements