On the origin of the 1 keV diffuse X-ray background

Details On the origin of the 1 keV diffuse X-ray background On the origin of the 1 keV diffuse X-ray background

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258...83n&link_type=abstract

Astrophysical Journal, Part 1, vol. 258, July 1, 1982, p. 83-95.

Astronomy and Astrophysics

Astronomy

56

Background Radiation, Diffuse Radiation, Interstellar Matter, Milky Way Galaxy, X Ray Astronomy, Galactic Nuclei, Isotropy, Sky Surveys (Astronomy)

Scientific paper

Soft 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.

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