Discovery of 100 kpc narrow curved twin jet in S-shaped giant radio galaxy: J0644+1043

2024/05/23 by Sethi, Sagar, Kuźmicz, Agnieszka, Jamrozy, Marek +1
#Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences

paper · doi:10.48550/arxiv.2405.14668

Abstract

We report the discovery of an S-shaped morphology of the radio galaxy J0644+1043 imaged with a 30 μJy sensitive 525 MHz broadband (band 3 + 4) uGMRT map. Dedicated spectroscopic observations of the host galaxy carried out with the 2-meter Rozhen telescope yielded a redshift of 0.0488, giving a projected linear size of the peculiar radio structure of over 0.7 Mpc. This giant radio galaxy is powered by a black hole of mass 4.1^+9.39_-2.87× 10⁸ \msun, from which vicinity emanate well-collimated and knotty jets, each ∼100 kpc long. The entire radio structure, presumably due to the effective jet precession, is less than 50 Myr old, has a power of ∼6 × 10²⁴ W Hz^-1 at 1.4 GHz and the observed morphological characteristics do not strictly conform to the traditional FR I or FR II categories.

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