Confirmation Of Two Galactic Supernova Remnant Candidates Discovered by THOR
Abstract
Anderson et al. identified 76 candidate supernova remnants (SNRs) using data from the H I/OH/Recombination line survey of the Milky Way. The spectral index and polarization properties can help distinguish between SNRs and H II regions, which are often confused. We confirm two SNR candidates using spectral index data and morphology. However, we observe that the fractional linear polarization cannot distinguish between SNRs and H II regions, likely due to contamination by diffuse Galactic synchrotron emission. We also comment on the association of SNR candidates with pulsars through geometric and age considerations.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 2018
- DOI:
- 10.3847/1538-4357/aadc0c
- arXiv:
- arXiv:1808.06628
- Bibcode:
- 2018ApJ...866...61D
- Keywords:
-
- ISM: H ii regions;
- ISM: supernova remnants;
- polarization;
- Astrophysics - Astrophysics of Galaxies;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 12 pages, 4 figures