The radio source in Abell 980: A Detached-Double-Double Radio Galaxy?

Abstract It is argued that the new morphological and spectral information gleaned from recently published LoFAR Two metre Sky Survey data release 2 (LoTSS-2 at 144 MHz) observations of cluster Abell 980 (A980), in combination with its existing GMRT VLA higher frequencies, provide much-needed evidence to strengthen proposal cluster’s radio emission comes mainly two double sources, both produced by brightest galaxy (BCG) major episodes jet activity. The lobes left previous activity have become diffuse developed an ultra-steep spectrum while rising buoyantly through confining hot intra-cluster medium (ICM) and, concomitantly, host has drifted centre entered a active phase manifested coinciding younger source. observational results arguments presented here bolster case old young sources A980 conjointly represent ‘double-double’ whose lobe pairs lost colinearity due (lateral) drift their parent galaxy, making this system far most plausible ‘Detached-Double-Double Radio Galaxy’ (dDDRG).