The Complex Broad-band X-ray Spectra of Seyfert Galaxies PDF Download
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Author: Kimberly Weaver
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 336
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Book Description
Author: Kimberly Weaver
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 336
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: COSPAR. Scientific Assembly
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 596
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Book Description
Author: Peter J. Serlemitsos
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 612
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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: The Cta Consortium
Publisher: World Scientific
ISBN: 9813270101
Category : Science
Languages : en
Pages : 365
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Book Description
This book summarizes the science to be carried out by the upcoming Cherenkov Telescope Array, a major ground-based gamma-ray observatory that will be constructed over the next six to eight years. The major scientific themes, as well as core program of key science projects, have been developed by the CTA Consortium, a collaboration of scientists from many institutions worldwide.CTA will be the major facility in high-energy and very high-energy photon astronomy over the next decade and beyond. CTA will have capabilities well beyond past and present observatories. Thus, CTA's science program is expected to be rich and broad and will complement other major multiwavelength and multimessenger facilities. This book is intended to be the primary resource for the science case for CTA and it thus will be of great interest to the broader physics and astronomy communities. The electronic version (e-book) is available in open access.
Author: Cosimo Bambi
Publisher: Springer Nature
ISBN: 9811969604
Category :
Languages : en
Pages : 5912
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Book Description
Author: Marek A. Abramowicz
Publisher: Cambridge University Press
ISBN: 9780521623629
Category : Science
Languages : en
Pages : 310
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Book Description
The first comprehensive and up-to-date review of our new understanding of accretion disks around black holes - with chapters from experts from around the world.
Author: Chris Skipper
Publisher: Springer
ISBN: 3319095870
Category : Science
Languages : en
Pages : 176
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Book Description
This thesis brings together the various techniques of X-ray spectral analysis in order to examine the properties of black holes that vary in mass by several orders of magnitude. In all these systems it is widely accepted that the X-ray emission is produced by Compton up-scattering of lower energy seed photons in a hot corona or accretion flow, and here these processes are examined through a study of the X-ray spectral variability of each source. A new technique is introduced, in which models are fitted to over 2 million X-ray spectra on time-scales as short as 16 ms, and subsequently it is shown that the nature of the correlation between intensity and spectral index is strongly dependent upon the spectral state of the black hole. Finally, the results of an extensive survey of nearby galactic nuclei using the Chandra X-ray telescope are presented in the form of images and spectra, and these results are used along with data from the literature to search for Compton-thick nuclei.
Author: Katsuji Koyama
Publisher: Springer Science & Business Media
ISBN: 9401149704
Category : Science
Languages : en
Pages : 464
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Book Description
The present decade is opening new frontiers in high-energy astrophysics. After the X-ray satellites in the 1980's, including Einstein, Tenma, EXOSAT and Ginga, several satellites are, or will soon be, simultaneously in orbit offering spectacular advances in X-ray imaging at low energies (ROSATj Yohkoh) as well as at high energies (GRANAT), in spectroscopy with increased bandwidth (ASCAj SAX), and in timing (XTE). While these satellites allow us to study atomic radiation from hot plasmas or energetic electrons, other satellites study nuclear radiation at gamma-ray energies (CGRO) associated with radioactivity or spallation reactions. These experiments show that the whole universe is emitting radiation at high energies, hence we call it the "hot universe. " The hot universe, preferentially emitting X- and gamma-rays, provides us with many surprises and much information. A symposium "The Hot Universe" was held in conjunction with the XXIIIrd General Assembly of the International Astronomical Union, at Kyoto on August 26-30 in 1997. The proceedings are organized as follows. Synthetic view of "the hot universe" is discussed in Section 1, "Plasma and Fresh Nucleosynthesis Phenomena". Timely discussions on the strategy for future missions "Future Space Program" are found in Section 2. Then the contents are divided into two major subjects: the compact objects and thin hot diffuse plasmas. Section 3 is devoted to the category of compact objects which includes white dwarfs, neutron stars, and gravitationally collapsed objects: stellar mass black holes or active galactic nuclei.
