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On the origin of the 1 keV diffuse X-ray backgroundSoft X-ray sky survey data for high galactic latitudes are used to constrain simple geometric models for the source of the diffuse X-ray background at 1 keV. The intensity maps show two extended and enhanced features, in Eridanus and in the direction of the galactic center, with a relatively uniform sky away from these features and an observed degree of isotropy consistent with a model in which the 0.5-1.2 keV background consists of an isotropic extragalactic component and a thick disk galactic component. A temperature of 2-3 million K and an emission pressure of 0.004 per cm to the 6th pc are derived for the galactic component from an assumed spectrum of 11E to the -1.4 power photons/sq cm s sr keV. While consistent with the data, a local, isotropically distributed source model is shown to pose physical difficulties.
Document ID
19820053714
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Nousek, J. A.
(Wisconsin Univ. Madison, WI, United States)
Fried, P. M.
(Wisconsin Univ. Madison, WI, United States)
Sanders, W. T.
(Wisconsin Univ. Madison, WI, United States)
Kraushaar, W. L.
(Wisconsin, University Madison, WI, United States)
Date Acquired
August 10, 2013
Publication Date
July 1, 1982
Subject Category
Astrophysics
Accession Number
82A37249
Funding Number(s)
CONTRACT_GRANT: NGL-50-002-044
Distribution Limits
Public
Copyright
Other

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