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The detection of X-rays from the hot interstellar medium of the Large Magellanic CloudA comprehensive reanalysis is presented of the Einstein IPC data base on the LMC, and a number of new algorithms are used to improve the reliability of the point source detection in this crowded region and to produce the first large-scale map of diffuse emission free from the effects of solar scattered X-rays and cosmic-ray particles. Algorithms described in detail include a technique to decontaminate fields containing solar scattered flux, a mechanism for obtaining a spectrum-weighted vignetting function, and a source excision and smoothing algorithm which results in a diffuse map of uniform statistical quality. A catalog of discrete X-rays sources in the direction of the LMC is presented which contains 33 new sources and eliminates a number of spurious and/or marginal directions from previous lists. A possible detection of the long-sought shadowing effect on the cosmic X-ray background produced by cold LMC gas is reported.
Document ID
19910056261
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Wang, Q.
(Columbia Univ. New York, NY, United States)
Hamilton, T.
(Columbia Univ. New York, NY, United States)
Helfand, D. J.
(Columbia Univ. New York, NY, United States)
Wu, X.
(Columbia University New York, United States)
Date Acquired
August 15, 2013
Publication Date
June 20, 1991
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 374
ISSN: 0004-637X
Subject Category
Space Radiation
Accession Number
91A40884
Funding Number(s)
CONTRACT_GRANT: NAG8-497
CONTRACT_GRANT: NAG8-664
Distribution Limits
Public
Copyright
Other

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