We observed the core region of the giant radio galaxy GRS J0844+4627 with
e-MERLIN at 1.52 and 5.07 GHz. These observations revealed that the apparent
single feature at the centre of GRS J0844+4627, as seen by GMRT, consists of
two components separated by 2.7 kpc in projection. Follow-up observations at
1.66 GHz using the EVN unveiled the complex morphologies of the two components.
In particular, the south-western component identified with the SDSS
J084408.85+462744.2 galaxy morphologically resembles a compact symmetric object
(CSO) with a projected linear size of 115 pc. If the CSO hypothesis turns out
to be correct, then the overall radio structure of GRS J0844+4627 is
triple-double. Given that CSOs are considered young objects, GRS J0844+4627
would appear as a recently restarted active galaxy.
Comment: Accepted for publication in MNRAS as a Letter