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Title:
High-resolution X-ray and radio images of the galactic SNR G39.2-0.3
Authors:
Becker, R. H.; Helfand, D. J.
Affiliation:
AA(California, University, Davis; Lawrence Livermore National Laboratory, Livermore, CA), AB(Columbia University, New York)
Publication:
Astronomical Journal (ISSN 0004-6256), vol. 94, Dec. 1987, p. 1629-1632. (AJ Homepage)
Publication Date:
12/1987
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
MILKY WAY GALAXY, RADIO SPECTRA, SUPERNOVA REMNANTS, X RAY IMAGERY, EMISSION SPECTRA, HYDROGEN CLOUDS, INFRARED ASTRONOMY, LINEAR POLARIZATION, SPECTRAL ENERGY DISTRIBUTION, STELLAR ENVELOPES, VERY LARGE ARRAY (VLA)
DOI:
10.1086/114593
Bibliographic Code:
1987AJ.....94.1629B

Abstract

Images of the galactic supernova remnant G39.2-0.3 at radio, infrared, and X-ray wavelengths are presented. The 6 and 20 cm VLA maps reveal a shell-brightened source with substantial emission in the central regions and a rather high degree of linear polarization throughout; no significant spectral variations over the face of the remnant are apparent. The Einstein X-ray image also shows emission from both the limb and the central region, while the IRAS data show no flux that can be unambiguously associated with the remnant, although an uncataloged small H II region is seen adjacent to the shell. The authors conclude that, contrary to previous suggestions, there is no evidence for a Crab-like component in G39.2-0.3, and that the central emission plateau is most likely simply a shell filament which happens to fall across the center of the remnant.

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