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.

arXiv comment5 pages, 1 figure, Accepted in RNAAS

References in corpus (7)

• The Pan-STARRS1 Database and Data Products
• The LOFAR Two-metre Sky Survey -- V. Second data release
• Unexpected Circular Radio Objects at High Galactic Latitude
• MeerKAT uncovers the physics of an Odd Radio Circle
• Unveiling the rarest morphologies of the LOFAR Two-metre Sky Survey radio source population with self-organised maps
• Mysterious Odd Radio Circle near the Large Magellanic Cloud -- An Intergalactic Supernova Remnant?
• Odd Radio Circles as supernovae remnants in the intragroup medium

Cited by in corpus (5)

• Insights on the origin of ORCs from cosmological simulations
• Discovery of a circularly symmetric extended diffuse radio emission around an elliptical galaxy with the VLA FIRST survey
• On energetics and progenitors of Odd Radio Circles: A causal connection with tidal disruption of stars?
• Discovery of Odd Radio Circles and Other Peculiars in the First Year of the EMU Survey using Object Detection
• Circular Mystery: Exploring Diffuse Emission Surrounding a Radio Galaxy with uGMRT and VLA Multiwavelength Observations