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Record 82 of 3286
On Compton reflection in the sources of the cosmic X-ray background
External Online Source: doi:10.1086/172345
Author and Affiliation:
Zdziarski, Andrzej A.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Zycki, Piotr T.(Polish Academy of Sciences, Astronomical Center, Warsaw, Poland)
Svensson, Roland(Stockholm Observatory, Saltsjobaden, Sweden)
Boldt, Elihu(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Abstract: Consideration is given to recent models for the cosmic X-ray background that assume that it originates from unresolved AGN emitting spectra due to enhanced Compton reflection of a power-law photon spectrum incident on cold matter. The parameter space of the Compton reflection model is studied, and the allowed parameter space is found to be severely constrained by physical and cosmological effects. For an incident power-law energy index alpha is greater than about 1, the X-ray peak in the observed spectrum from a population of AGN is necessarily at an energy less than that of the observed peak. Two examples of improved fits to the X-ray background are shown. It is concluded that the Compton reflection models proposed to date do not provide a straightforward explanation of the X-ray background spectrum.
Publication Date: Mar 01, 1993
Document ID:
19930044637
(Acquired Dec 28, 1995)
Accession Number: 93A28634
Subject Category: SPACE RADIATION
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 1 (ISSN 0004-637X); 405; 1; p. 125-129.
Publisher Information: United States
Contract/Grant/Task Num: NATO-CRG-0524/90; NAG5-1570; NAG5-1813
Financial Sponsor: NASA; United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTRONOMICAL MODELS; BACKGROUND RADIATION; COMPTON EFFECT; COSMIC X RAYS; WAVE REFLECTION; X RAY SOURCES; ACTIVE GALACTIC NUCLEI; DIFFUSE RADIATION
Imprint And Other Notes: Astrophysical Journal, Part 1 vol. 405, no. 1 p. 125-129. March 1, 1993
Miscellaneous Notes: Research supported by Polish State Committee for Scientific Research and NFR
Availability Source: Other Sources
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