Details

Autor(en) / Beteiligte

• Marecki, A
• Sebastian, B
• Ishwara-Chandra, C H

Titel

The structure at the centre of the giant radio galaxy GRS J0844+4627: a compact symmetric object?

Ist Teil von

• Monthly notices of the Royal Astronomical Society. Letters, 2023-01, Vol.518 (1), p.L83-L86

Ort / Verlag

Oxford University Press

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• ABSTRACT 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.