Journal Article

A multiwavelength study of the radio source G296.7−0.9: confirmation as a Galactic supernova remnant

W. J. Robbins, B. M. Gaensler, T. Murphy, S. Reeves and A. J. Green

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 419, issue 3, pages 2623-2632
Published in print January 2012 | ISSN: 0035-8711
Published online January 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.19912.x
A multiwavelength study of the radio source G296.7−0.9: confirmation as a Galactic supernova remnant

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We present a multiwavelength study of the radio source G296.7−0.9. This source has a bilateral radio morphology, a radio spectral index of −0.5 ± 0.1, sparse patches of linear polarization and thermal X-rays with a bright arc near the radio boundary. Considering these characteristics, we conclude that G296.7−0.9 is a supernova remnant (SNR). The age and morphology of the SNR in the context of its environment suggest that the source is co-located with an H ii region, and that portions of the shock front have broken out into a lower density medium. We see no evidence for a neutron star or pulsar wind nebula associated with SNR G296.7−0.9.

Keywords: ISM: supernova remnants; radio continuum: general

Journal Article.  6905 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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