Astronomy & Astrophysics
Radio spectral properties and aging of two tailed radio galaxies in a galaxy group at z=0.35
We present a study of two tailed radio galaxies located in the core of a massive, dynamically young galaxy group, previously identified as an early group-group merger. Using broadband VLA 3 GHz and 1.4 GHz, MeerKAT 1.35 GHz, and GMRT 610 MHz and 325 MHz observations, we investigate the radio spectral properties as well as the spectral and dynamical ages of both sources. The radio morphologies show clear evidence of an interaction with the intragroup medium (IGM). One galaxy is a wide-angle tail (WAT) source with we …