Abstract
view Abstract Citations (14) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Physics of the X-Radiation from Clusters of Galaxies Sofia, Sabatino Abstract By examining the data relating to the Perseus, Virgo, and Coma clusters of galaxies, it is shown that the X-ray luminosity in the 2-10 keV range is directly proportional to the average virial mass per galaxy in the cluster. If we assume that the missing mass exists and that it is in the form of gas, then this proportionality suggests that the heating of the X- cloud is due to bombardment by cosmic rays produced in the active galaxy found in each of the cluster sources. The X-radiation, then, is optically thin bremsstrahlung radiation produced by the (not necessarily isothermal) hot gas. The consequences of this model are examined, and it is shown that it leads to values for the cluster parameters in good agreement with the observations. Subject headings: galaxies, clusters of - X-rays Publication: The Astrophysical Journal Pub Date: January 1973 DOI: 10.1086/181109 Bibcode: 1973ApJ...179L..25S full text sources ADS |
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