| Name: Janhavi Baghel Affiliation: National Centre for Radio Astrophysics - Tata Institute of Fundamental Research, Pune Conference ID: ASI2023_303 Title : Kiloparsec-scale Radio Polarized Structures of Palomar-Green Quasars and BL Lacs Authors and Co-Authors : J. Baghel and P. Kharb Abstract Type : Oral Abstract Category : Extragalactic Astronomy Abstract : I will present the results from the current study of the kiloparsec scale radio polarimetric observations of 24 quasars and BL Lacs belonging to the Palomar-Green (PG) sample. EVLA and uGMRT polarimetric data show extensive polarization structures in cores, jets, lobes and hotspots of the radio-loud quasars. A large fraction of the PG quasars show restarted, distorted (S- or X-shaped), or hybrid Fanaroff-Riley (FR) morphology. We attribute this to the optical/UV selection criteria of the PG sample that remains unbiased at radio frequencies. Preliminary results indicate that B-fields in the quasar jets are poloidal whereas BL Lacs show toroidal B-fields extending up to kpc scales. This is consistent with the Very long baseline interferometry (VLBI) observations of blazars that have found the same corresponding division in the magnetic field structures at parsec scales. These results suggest that both intrinsic (central-engine-related) as well extrinsic (environment-related) factors play a crucial role in the creation of the blazar subclasses. |