Study of the fluctuations in the cosmic X-ray background

Details Study of the fluctuations in the cosmic X-ray background Study of the fluctuations in the cosmic X-ray background

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981prnc.rept.....t&link_type=abstract

Final Report Princeton Univ., NJ.

Other

Background Radiation, Cosmic X Rays, Variations, X Ray Sources, Brightness, Galactic Radiation, Heao 1, Image Processing, Quasars, Sas-3

Scientific paper

The emerging picture indicates that neither the total cosmic X-ray background (CXB) flux nor the fluctuations are completely dominated by any single class of sources. Quasars clearly contribute a substantial fraction of the total flux while galaxy cluster X-ray sources and galactic nuclear activity also make nonnegligible contributions. It appears that from the large angular scale CXB galaxy correlations that no class of relatively low liminosity X-ray sources associated with galaxies can play a major role in supplying the total flux. The origin of the fluctuations looks more complex. It is hard to avoid the conclusion that the NGP-SGP difference and some other features of the CXB map are associated with the local anisotropy in the galactic distribution (the local supercluster). It also appears reasonable to some suppose that at least some large angular structures in the CXB are due to emission from hot galactic halo gs.

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