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Title:
HEAO 1 A-2 low-energy detector X-ray spectra of the Lupus Loop and SN 1006
Authors:
Leahy, D. A.; Nousek, J.; Hamilton, A. J. S.
Affiliation:
AA(Calgary, University, Canada), AB(Pennsylvania State University, University Park), AC(Joint Institute for Laboratory Astrophysics, Boulder, CO)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 374, June 10, 1991, p. 218-226. NSERC-supported research. (ApJ Homepage)
Publication Date:
06/1991
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
HEAO 1, SUPERNOVA REMNANTS, SUPERNOVAE, X RAY SOURCES, X RAY SPECTRA, ABUNDANCE, ASTRONOMICAL MODELS, SPACEBORNE ASTRONOMY, STELLAR SPECTRA
DOI:
10.1086/170111
Bibliographic Code:
1991ApJ...374..218L

Abstract

The Lupus Loop and SN 1006 were observed by the A-2 low-energy detector proportional counters on the HEAO 1 satellite as part of the all-sky survey. As a result of a major advance in understanding of detector response and background accurate analysis of the data has become possible. Soft X-ray spectra for both supernova remnants were constructed from the PHA data taken during the scanning observations. Single-temperature and two-temperature Raymond-Smith models were fitted to the observed spectra. In addition, power-law and power-law plus one-temperature models were fitted to the spectrum of SN 1006. Only two-component models provide an adequate description for both Lupus Loop and SN 1006 spectra. The temperatures, column densities, and emission measures are significantly more accurate than previous results.

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