The detection of X-rays from the hot interstellar medium of the Large Magellanic Cloud

Details The detection of X-rays from the hot interstellar medium of the Large Magellanic Cloud The detection of X-rays from the hot interstellar medium of the Large Magellanic Cloud

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...374..475w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 374, June 20, 1991, p. 475-495.

Astronomy and Astrophysics

Astrophysics

93

Active Galactic Nuclei, Diffuse Radiation, Heao 2, Interstellar Matter, Magellanic Clouds, X Ray Sources, Astronomical Catalogs, Background Radiation, Interstellar Gas, Spectral Methods

Scientific paper

A 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.

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