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The soft X-ray diffuse background and the structure of the local interstellar mediumData from five rocket flights of the Wisconsin soft X-ray sky survey, covering the southern galactic hemisphere with 6.5 deg spatial resolution between 0.1 and 2.0 keV, are presented as intensity maps. Analysis of the data in two energy bands below 0.3 keV is presented here. These low-energy X-rays appear to be emitted from a plasma of about one-million K, the bulk of which is closer to the sun than even the nearest 5 x 10 to the 19th/sq cm of neutral gas. No evidence is found for the presence of nearby small (radius of about 0.6 pc) clouds of cool neutral gas, as has been proposed by McKee and Ostriker (1977). The X-ray measurements are consistent with the small amounts of local neutral material inferred from Lyman-alpha absorption measurements.
Document ID
19810040233
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Fried, P. M.
(Wisconsin Univ. Madison, WI, United States)
Nousek, J. A.
(Wisconsin Univ. Madison, WI, United States)
Sanders, W. T.
(Wisconsin Univ. Madison, WI, United States)
Kraushaar, W. L.
(Wisconsin, University Madison, Wis., United States)
Date Acquired
August 11, 2013
Publication Date
December 15, 1980
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
81A24637
Funding Number(s)
CONTRACT_GRANT: NGL-50-002-044
Distribution Limits
Public
Copyright
Other

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