Astrophysics Seminar

Astrophysics Seminar

Chasing DRAGN tails and wings with MeerKAT

Speaker: Kshitij Thorat (University of Pretoria, South Africa)

तिथि और समय
कार्यक्रम का स्थान
Library Block Lecture Hall

अमूर्त

Double Radio Sources Associated with Active Galactic Nuclei (DRAGN) are some of the most spectacular examples of nuclear activity and its largest-scale signposts via their radio-loud jets and lobes; making them invaluable in understanding cosmic structure formation and feedback processes. Winged and tailed sources form a subset of DRAGNS which show large-scale deformation, inversion-symmetric and mirror-symmetric, respectively, to their jets and lobes - attributed to various intrinsic and environmental causes. Winged DRAGNs have been associated with both environmental and  environmental  origins  while  tailed  sources  for  long  have  been thought as markers of cluster environments.
 

SKA pathfinders and precursors have, over the past few years, uncovered winged and tailed DRAGNS with unforeseen morphological features and revealed unknown aspects of these sources thought well understood. In particular, the MeerKAT radio telescope in South Africa excels at the task of imaging faint continuum and HI emission in radio sources by combining long baselines and a core-heavy layout.  In this talk, I’ll present the results of studies of winged and tailed radio galaxies observed with MeerKAT as well as discuss their detection strategies using Machine Learning techniques, their broadband observations and multiwavelength perspectives and how these point the way forward to the upcoming SKA era.