The AGN/normal Galaxy Connection PDF Download
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Author: COSPAR. Scientific Assembly
Publisher:
ISBN:
Category : Active galactic nuclei
Languages : en
Pages : 390
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Book Description
Author: COSPAR. Scientific Assembly
Publisher:
ISBN:
Category : Active galactic nuclei
Languages : en
Pages : 390
Get Book Here
Book Description
Author: Weimin Wang
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 536
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Book Description
Starburst and AGN, which are among the most active extragalactic phenomena, have been studied independently for many years. Recent observations reveal that many galaxies exhibit both AGN and starburst features, which naturally invites an investigation of their physical connection. Considerable new multi-wavelength observations during the last decade together with the results of many theoretical studies are enabling the physics and connectedness of these two phenomena to be understood more deeply. These proceedings are of a conference held at Shanghai Normal University, on a very pleasant campus southwest of the city. More than 120 participants from over 20 different countries were in attendance. The goals of the conference were to review past progress, present new results, plan future work, and establish observational and theoretical collaborations. We were treated to the first in-depth presentation of Spitzer Space Telescope mid- IR spectroscopy and imaging/photometry as well as new detailed theoretical modeling of the relationship and interaction between starbursts and AGN. Also presented were major new studies of the local universe from SDSS and other ground-based radio, IR/optical, and space-based x-ray observatories. The importance of the intense starburst and AGN activity in the early universe only 1 billion years after the Big Bang is becoming evident from the very early formation of extremely massive galaxies and black holes. The coming together and cross-fertilization of these studies at the conference was most productive.
Author:
Publisher:
ISBN:
Category : Active galaxies
Languages : en
Pages : 0
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Book Description
Author: Hagai Netzer
Publisher: Cambridge University Press
ISBN: 1107021510
Category : Science
Languages : en
Pages : 369
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Book Description
A comprehensive introduction to the theory underpinning our study of active galactic nuclei and the ways we observe them.
Author: Bradley M. Peterson
Publisher: Cambridge University Press
ISBN: 9780521479110
Category : Science
Languages : en
Pages : 258
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Book Description
How can we test if a supermassive black hole lies at the heart of every active galactic nucleus? What are LINERS, BL Lacs, N galaxies, broad-line radio galaxies and radio-quiet quasars and how do they compare? This timely textbook answers these questions in a clear, comprehensive and self-contained introduction to active galactic nuclei - for graduate students in astronomy and physics. The study of AGN is one of the most dynamic areas of contemporary astronomy, involving one fifth of all research astronomers. This textbook provides a systematic review of the observed properties of AGN across the entire electromagnetic spectrum, examines the underlying physics, and shows how the brightest AGN, quasars, can be used to probe the farthest reaches of the Universe. This book serves as both an entry point to the research literature and as a valuable reference for researchers in the field.
Author: Houjun Mo
Publisher: Cambridge University Press
ISBN: 0521857937
Category : Science
Languages : en
Pages : 841
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Book Description
A coherent introduction for researchers in astronomy, particle physics, and cosmology on the formation and evolution of galaxies.
Author: A.J. Barger
Publisher: Springer Science & Business Media
ISBN: 9781402024702
Category : Science
Languages : en
Pages : 322
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Book Description
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: Volker Beckmann
Publisher: John Wiley & Sons
ISBN: 3527410783
Category : Science
Languages : en
Pages : 390
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Book Description
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:
Publisher: EduGorilla Community Pvt. Ltd.
ISBN: 9368179727
Category :
Languages : en
Pages : 789
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Book Description
Author: Stefano Minardi
Publisher: VCH
ISBN: 9783527411108
Category :
Languages : en
Pages : 350
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Book Description
Written by well-known scientists in the field with vast experience in teaching astrophotonics, this is the first book to bridge astronomy and photonics for the benefit of developing new astronomical instrumentation. The textbook is clearly structured and covers four main methods relevant to observational astronomy: adaptive optics, photometry, interferometry and spectroscopy. It follows a progressive didactical path in photonics, starting from fundamentals of wave- and micro-optics and developing step-by-step the formalisms required for the treatment of optical multilayers, fiber optics and diffraction/holographic gratings. This approach allows students with a physics/engineering background to learn about the problematic of observational astronomy, while, conversely, students of astronomy are exposed to topics in modern photonics. Each chapter is divided into three main sections devoted to the discussion of astronomical concepts required to size an instrument designed for the particular method, the photonic concepts that most suit that instrument, and an analysis of existing, related photonic instruments. A set of exercises and a bibliography complete each chapter. Appendices include a short review of fundamentals of wave optics and photon detectors, plus an overview of project design and management using a real-life example of an astronomical instrumentation project. With its review of the latest instrumentation and techniques, this is invaluable for graduate and post-graduate students in astronomy, physics and optical engineering.
