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A search for extended halos of hot gas in the Perseus, Virgo, and Coma ClustersObservations of the Perseus cluster by the HEAO 1 satellite have revealed a faint X-ray halo extending at least 2.5 deg from the center and contributing between 5% and 20% to the total luminosity. This may be of nonthermal origin, but it also may be explained in terms of hot gas bound by the gravitational field of the cluster. Statistical uncertainties made it impossible to detect any such halo in the Coma cluster. Observations of the Virgo cluster confirmed the detection by the Ariel 5 satellite of a broad region of faint X-ray emission (core radius 60 arcmin). If the very extended X-ray emission from Virgo is due to hot intracluster gas, the density of this gas is lower than expected from a consideration of gas and galaxy densities in the Perseus cluster.
Document ID
19800042810
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Ulmer, M. P.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Cruddace, R. G.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Wood, K.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Meekins, J.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Yentis, D.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Evans, W. D.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Smathers, H. W.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Byram, E. T.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Chubb, T. A.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Friedman, H.
(U.S. Navy, E. O. Hulburt Center for Space Research, Washington D.C., United States)
Date Acquired
August 10, 2013
Publication Date
February 15, 1980
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
80A26980
Funding Number(s)
CONTRACT_GRANT: NAS8-33010
CONTRACT_GRANT: DPR-7023A
Distribution Limits
Public
Copyright
Other

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