A multi-wavelength study of the radio source G296.7-0.9: confirmation as a Galactic supernova remnant

Details A multi-wavelength study of the radio source G296.7-0.9: confirmation as a Galactic supernova remnant A multi-wavelength study of the radio source G296.7-0.9: confirmation as a Galactic supernova remnant

2011-09-28

arxiv.org/abs/1109.6326v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

11 pages with 9 figures and 2 tables. Accepted for publication in MNRAS

Scientific paper

We present a multi-wavelength 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 polarisation, 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 HII 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.

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