Clusters, Groups, and the Diffuse X-ray Background

Details Clusters, Groups, and the Diffuse X-ray Background Clusters, Groups, and the Diffuse X-ray Background

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...19710712v&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #107.12; Bulletin of the American Astronomical Society, Vol. 32, p.1583

Astronomy and Astrophysics

Astronomy

Scientific paper

Many, if not most, of the baryons in the present-day universe are thought to reside in intergalactic space at temperatures of 105 to 107 K. X-ray emission from these baryons contributes a modest (10 1 keV background whose prominence depends on the amount of non-gravitational energy injected into intergalactic space by supernovae and AGNs. Because the virialized regions of groups and clusters cover a large percentage of the sky, observing the baryons belonging to individual intercluster filaments may prove quite difficult. However, information about the global properties of the intergalactic medium is contained in the surface-brightness distribution of the diffuse X-ray background.

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