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X-rays from the SNR 3C 391An X-ray map and spectral information were obtained from a short Einstein observation of 3C 391 (G31.9 + 0.0). Both X-ray and radio emission appear to come from an irregular shell 5 arcmin in diameter. For a distance of 11 kpc the X-ray luminosity is at least 10 to the 35th ergs/sec. The luminosity, the radius, and the temperature are about as expected from a middle-aged SNR expanding into a medium with density a few tenths of an atom per cu cm.
Document ID
19840050788
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/161935
Authors
Seward, F. D. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Wang, Z. R. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 12, 2013
Publication Date
April 15, 1984
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 279
ISSN: 0004-637X
Subject Category
Astrophysics
Report/Patent Number
ISSN: 0004-637X
Accession Number
84A33575
Funding Number(s)
CONTRACT_GRANT: NAS8-30751
Distribution Limits
Public
Copyright
Other

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