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X-radiation from clusters of galaxies - Spectral evidence for a hot evolved gasOSO-8 observations of the X-ray flux in the range between 2 and 60 keV from the Virgo, Perseus, and Coma clusters provide strong evidence for the thermal origin of the radiation, including iron-line emission. The data are adequately described by emission from an isothermal plasma with an iron abundance in near agreement with cosmic levels. A power-law description is generally less acceptable and is ruled out in the case of Perseus. Implications of the origin of the cluster gas are discussed.
Document ID
19770038228
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Serlemitsos, P. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Smith, B. W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Boldt, E. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Holt, S. S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Swank, J. H.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 9, 2013
Publication Date
January 15, 1977
Publication Information
Publication: Astrophysical Journal
Volume: 211
Subject Category
Astrophysics
Accession Number
77A21080
Distribution Limits
Public
Copyright
Other

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