Other
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...302..287h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 302, March 1, 1986, p. 287-295.
Other
52
Galactic Clusters, X Ray Sources, X Ray Spectra, Compton Effect, Heao 1, Intergalactic Media, Iron
Scientific paper
The HEAO 1 A-2 and OSO 8 observations of the Coma Cluster of galaxies in the 2-60 keV energy band are presented. The spectrum is not well fitted by an isothermal bremsstrahlung model with an Fe line. To model the spectrum more accurately, we have performed fits of polytropic models and find that the gas is well fitted by an equation of state with polytropic index ranging between 1.38 and 1.6. This analysis reduces the total cluster mass by a factor of 3-5 below the optically derived virial mass. Using the best-fitting parameters, the gas is found to be a significant fraction (25 percent) of the total cluster mass. The Fe K-alpha line blend is strongly detected, from which we infer 0.18-0.36 solar abundance in the X-ray emitting gas. The Fe K-beta line blend is also weakly detected. The spectrum is not consistent with the existence of a hard X-ray tail at the flux level reported by Bazzano el al. (1984). In addition, the HEAO I scanning mode data place strong constraints on possible contaminating sources in the region surrounding Coma.
Henriksen Mark J.
Mushotzky Richard F.
No associations
LandOfFree
The X-ray spectrm of the Coma Cluster of galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The X-ray spectrm of the Coma Cluster of galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The X-ray spectrm of the Coma Cluster of galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1280574