Computer Science – Sound
Scientific paper
Nov 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...209..678m&link_type=abstract
Astrophysical Journal, vol. 209, Nov. 1, 1976, pt. 1, p. 678-686.
Computer Science
Sound
45
Emission Spectra, Galactic Clusters, X Ray Sources, Astronomical Models, Black Brant 5 Sounding Rocket, Bremsstrahlung, Virgo Galactic Cluster
Scientific paper
Soft X-ray emission profiles of the Virgo, Coma, and Perseus clusters of galaxies with 9.2-arcmin resolution are presented for the energy band from 0.5 to 3 keV. For Virgo, a profile is also given for the band from 0.1 to 0.28 keV. The profiles are compared with various models including extended and point sources, particularly a model with an extended source involving thermal bremsstrahlung from a hot gas located in the gravitational potential well of the cluster. It is found that the soft X-ray emission from Virgo is extended, symmetric, and centered on M87; that the emission from Coma is not dominated by any single galaxy; and that the emission from Perseus is centered within 3 arcmin of NGC 1275 and is narrower along a north-south axis than along the east-west axis containing the line of bright galaxies. Limits are set on the strength of possible point sources.
Bowyer Stuart
Lampton Michael
Malina Roger
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