Abstract Details
| Name: Biny Sebastian Affiliation: NCRA-TIFR Conference ID: ASI2017_857 Title : Study of candidate X-shaped radio galaxies at low radio frequencies Authors and Co-Authors : Biny Sebastian(NCRA-TIFR), Dharam V. Lal(NCRA-TIFR), A. Pramesh Rao (NCRA-TIFR), C.C. Cheung (NRL), and Sanjay Bhatnagar(NRAO) Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : The nature of X-shaped radio galaxies is a matter of considerable debate in the literature: it has even been proposed that they provide evidence for black hole mergers/spin reorientations, and therefore constrain the rate of strong gravitational wave events. Lal & Rao 2005 showed that the low-surface-brightness wings have flatter radio spectral index than the active lobes in 3C223.1, an X-shaped source, which supports above conjuncture. In order to investigate in detail the mechanism of the formation of X-shaped sources and hence the statistical understanding of nature of these sources is a must; and we undertook a study of a large sample of (candidate) X-shaped sources gleaned from the VLA FIRST survey images using GMRT. Here, we present our preliminary results. |