Discovery of 100 Kpc Narrow Curved Twin Jet in S-shaped Giant Radio Galaxy: J0644+1043

We report the discovery of an S-shaped morphology of the radio galaxyJ0644+1043 imaged with a 30 μJy sensitive 525 MHz broadband (band 3 +4) uGMRT map. Dedicated spectroscopic observations of the host galaxy carriedout with the 2-meter Rozhen telescope yielded a redshift of 0.0488, giving aprojected linear size of the peculiar radio structure of over 0.7 Mpc. Thisgiant radio galaxy is powered by a black hole of mass4.1^+9.39_-2.87× 10^8 , from which vicinity emanatewell-collimated and knotty jets, each ∼100 kpc long. The entire radiostructure, presumably due to the effective jet precession, is less than 50 Myrold, has a power of ∼6 × 10^24 W Hz^-1 at 1.4 GHz and theobserved morphological characteristics do not strictly conform to thetraditional FR I or FR II categories.