LOFAR search for radio emission from galaxies hosting tidal disruption events

Kamakshi Kaushik, Amitesh Omar, Brijesh Kumar, Kuntal Mishra, Jagdish Joshi

Submitted on 17 September 2022


Radio emission from 23 tidal disruption event host galaxies were searched in the 144 MHz LOFAR-LoTSS2 images. Three host galaxies are detected with diffuse radio emission, which can be interpreted as either galactic synchrotron radio emission or diffuse radio halo in dense galactic environments. Non-detection of (transient) radio emission in majority of galaxies could be due to self-absorption of radio emission associated with the tidal disruption event. The detected objects are AT2018iih, RBS 1032, and NGC 5905. Non-detection for Sw 1644+57 is also reported.


Comment: 3 pages, 3 figures, In Research Notes AAS (RNAAS)

Subject: Astrophysics - Astrophysics of Galaxies