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Title:
The X-ray spectrum of the supernova remnant W49B from EXOSAT
Authors:
Smith, A.; Peacock, A.; Jones, L. R.; Pye, J. P.
Affiliation:
AA(ESA, Space Science Dept., Noordwijk, Netherlands), AB(ESA, Space Science Dept., Noordwijk, Netherlands), AC(Leicester, University, England), AD(Leicester, University, England)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 296, Sept. 15, 1985, p. 469-474. SERC-supported research. (ApJ Homepage)
Publication Date:
09/1985
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL SPECTROSCOPY, EXOSAT SATELLITE, SPACEBORNE ASTRONOMY, SUPERNOVA REMNANTS, X RAY ASTRONOMY, EMISSION SPECTRA, ENERGY SPECTRA, NEBULAE, SCINTILLATION COUNTERS
DOI:
10.1086/163466
Bibliographic Code:
1985ApJ...296..469S

Abstract

X-ray observations of the supernova remnant W49B made by the medium-energy detector and gas scintillation propotional counter experiments on board Exosat are presented. The detection of a very strong emission line feature at 6.7 keV indicates a thermal origin of the X-rays. Fitting the spectral data with an optically thin thermal plasma model indicates a temperature of 2 keV for the remnant. From a consideration of Exosat, Einstein, and radio data, it is suggested that the dominant observed X-ray emission comes from a reverse shock.

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