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X-Rays form the Vela-Puppis ComplexA review of X-ray observations in the vicinity of the Gum nebula is presented. There is little doubt that the filamentary nebula Stromlo 16, the radio source Vela X, and the extended X-ray object Vel XR-2 are indications of the same, relatively nearby, supernova remnant. X-ray absorption measurements are consistent with a distance of 500 + or - 100 pc. The observed X-ray spectra have not yet distinguished between thermal bremsstrahlung and synchrotron radiation as the source mechanism. A search for low energy X-ray emission lines, both within the 5 deg diameter remnant and in the larger Gum nebula, may provide an important test for models of supernova remnant evolution.
Document ID
19720004121
Document Type
Conference Paper
Authors
Bunner, A. N. (Wisconsin Univ. Madison, WI, United States)
Date Acquired
August 6, 2013
Publication Date
September 1, 1971
Publication Information
Publication: NASA. Goddard Space Flight Center The Gum Nebula and Related Probl.
Subject Category
SPACE RADIATION
Funding Number(s)
CONTRACT_GRANT: NGL-50-002-044
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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