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Title:
New radio observations of the composite supernova remnant G29.7-0.3
Authors:
Becker, R. H.; Helfand, D. J.
Affiliation:
AA(Virginia Polytechnic Institute and State University, Blacksburg, VA), AB(Columbia University, New York, NY)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 1, 1984, p. 154-157. (ApJ Homepage)
Publication Date:
08/1984
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
NEBULAE, RADIO SOURCES (ASTRONOMY), SUPERNOVA REMNANTS, H LINES, TELESCOPES, X RAYS
DOI:
10.1086/162285
Bibliographic Code:
1984ApJ...283..154B

Abstract

The galactic supernova remnant G29.7-0.3, recently identified as a new member of the class of composite remnants, has been imaged with the VLA at three wavelengths: 2, 6, and 20 cm. Two spectrally distinct components, a flat-spectrum core surrounded by a shell with alpha of about -0.7, suggested by early observations, have been confirmed. Neutral hydrogen absorption measurements of these two components confirm their physical association and place the remnant at a distance of about 21 kpc. A radio polarization map of the Crab-like core and results of an examination of existing X-ray data for evidence of emission from the shell component are also presented. A comparison of the radio and X-ray properties of G29.7-0.3 and other composite SNRs concludes the report.

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