The X-ray Background

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Xavier Barcons, A. C. Fabian
Cambridge University Press, 1992 - Science - 310 pages
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This text presents a review of the current observational knowledge and understanding of the cosmic X-ray background, discovered 30 years ago. The most relevant observational features of the cosmic X-ray background, its spectrum, and high galactic latitude isotropy on all angular scales in its source content, are reviewed in detail. The contribution of the Ginga, Rosat and BBXRT space missions, play a major role in the discussions of the most recent estimates of the contribution to the X-ray intensity of different classes of sources, mostly Active Galactic Nuclei and Clusters of Galaxies. The fraction of resolved background intensity approaches 50% at soft energies, where QSOs dominate. At higher photon energies, where most of the energy density of the background resides, the fraction directly resolved is smaller. Models for the residual intensity are discussed in the book, with particular emphasis on spectral as well as isotrophy constraints.
  

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Contents

past present and future
12
how much of it is extragalactic?
21
The spectrum of the cosmic Xray background
29
The hard Xray background
44
Shadows in the soft Xray diffuse background
54
Small scale anisotropies of the XRB
61
The large scale surface brightness distribution of the Xray background
80
R Muihotzky K Jahoda
97
MartmMirones
177
Source models of the Xray background
187
Contribution of clusters to the Xray background
201
A Compton reflection model for the cosmic Xray and gammaray backgrounds
211
Hn iat deep surveys
229
first results
242
The contribution of Ginga to studies of the Xray background
259
Deep Rosat observations in QSO survey fields
270

Lahav
103
Toffolatti X Barcons
109
The extragalactic volume Xray emissivity
115
Deep Xray source counts
138
The AGN contribution to the Xray background
149
HEAO study of hard Xray emission from starburst galaxies
169
The CUBIC experiment
277
The ASTROD mission
286
R E Rothschild
293
W T Sanders R J Edgar
299
Summary
305
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