| Name: | Sushanta Kumar Mondal |
| Affiliation: | Sidho-Kanho-Birsha University |
| Conference ID : | ASI2023_676 |
| Title : | AN EXTENDED SAMPLE OF X/Z-SHAPED RADIO GALAXIES FROM TGSS ADR1 |
| Authors : | Netai Bhukta(1), Sabyasachi Pal(2), and Sushanta Kumar Mondal(1)
(1) Department of Physics, Sidho-Kanho-Birsha University, Ranchi Road, Purulia 723104, India
(2) Midnapore City College, Bhadutala, Kuturia, Paschim Midnapur 721129, India |
| Mode of Presentation: | Poster |
| Abstract Category : | Extragalactic Astronomy |
| Abstract : | A radio galaxy shows a pair of relativistic radio jets emerging from the central black hole or active galactic nucleus (AGN), directed in opposite directions. In a very small subclass of radio galaxies (3–10 %), in addition to the primary jet pair, another extra pair of radio jets or wings is visible, which is known as winged radio galaxies. Winged radio galaxies are classified into two major sub-classes based on the alignment of the secondary lobes with respect to the primary lobes: X-shaped radio galaxies (XRGs) and Z/S-shaped radio galaxies (ZRGs). For XRGs, the primary and secondary jets pass symmetrically near the centre of the elliptical galaxy which is the source of the jet pairs. The secondary jets for ZRGs are seen to emerge from the edges of the primary jets. Taking advantage of the good sensitivity and high resolution of the Tata Institute of Fundamental Research (TIFR) Giant Metrewave Radio Telescope (GMRT) Sky Survey at 150 MHz, we have identified 58 new winged radio galaxies, out of which 40 are XRGs and 18 are ZRGs. We have made a study on the wing size, spectral index, angle between major and minor axis, and radio luminosity of newly discovered winged radio galaxies and made a comparative study with previously detected XRGs and ZRGs. |
