Ionized gas extends over 40 kpc in an odd radio circle host galaxy
A new class of extragalactic astronomical sources discovered in 2021, named odd radio circles (ORCs)1, are large rings of faint, diffuse radio continuum emission spanning approximately 1 arcminute on the sky. Galaxies at the centres of several ORCs have photometric redshifts of z ≃ 0.3–0.6, implying physical scales of several 100 kpc in diameter for the radio emission, the origin of which is unknown. Here we report spectroscopic data on an ORC including strong...
Western Australia Planck Collaborationet Al Library Of Fast Radiative Shock Models Astrophysics Source Code Library Sloan Digital Sky Evolutionary Map
Source: nature.com