Interpretation of the Cosmic X-Ray Background

Details Interpretation of the Cosmic X-Ray Background Interpretation of the Cosmic X-Ray Background

Nov 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969rspsa.313..349s&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 313, Issue 1514, pp. 349-355

Physics

1

Scientific paper

Recent work on the X-ray background is reviewed. The most attractive explanation of the high energy background (> 1 keV) is Compton collisions between cosmic black body photons and relativistic electrons in radio sources of large red shift (~ 5). The recently discovered low energy background (~ 0.25 keV) may have the same origin, or be due to emission from either a dense (about 10 atoms m-3) hot (about 0.5 MK) intergalactic gas or to a more local hot gas with an emission measure ~ 1 cm-6 pc. Absorption effects are important at 0.25 keV, and one may be able to draw significant conclusions about hydrogen, helium, carbon and nitrogen in the intergalactic gas. The status of absorption in the Galaxy is confused.

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