Yet Another Odd Radio Circle?
Abstract
The Odd Radio Circles are newly identified diffuse radio sources at ~1 GHz frequency, with edge-brightened nearly circular morphology, which is remarkably similar to supernova remnants although a physical association with previous population of Galactic supernova remnants is challenging due to detections of the Odd Radio Circles at high Galactic latitudes. Here, a serendipitous identification of a new source in a LOFAR 144 MHz image with similar morphology as that of Odd Radio Circles is reported. This is the first reported identification of an Odd Radio Circle at a very low frequency and with the LOFAR.
- Publication:
-
Research Notes of the American Astronomical Society
- Pub Date:
- May 2022
- DOI:
- 10.3847/2515-5172/ac7044
- arXiv:
- arXiv:2205.08092
- Bibcode:
- 2022RNAAS...6..100O
- Keywords:
-
- Radio continuum emission;
- Supernova remnants;
- Extragalactic radio sources;
- Sky surveys;
- 1340;
- 1667;
- 508;
- 1464;
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 5 pages, 1 figure, Accepted in RNAAS