uGMRT radio non-detection of the TDE AT2020zso
ATel #14828; Rupak Roy (IUCAA), A. J. Nayana (UAE University), Poonam Chandra (NCRA-TIFR)
on 5 Aug 2021; 13:26 UT
Credential Certification: Rupak Roy (rupakroy1980@gmail.com)
Subjects: Radio, Tidal Disruption Event
Alexander et al. (ATEL #14337, AstroNote 2021-24) reported the discovery of the radio counterpart of the Tidal Disruption Event AT2020zso with the Karl G. Jansky Very Large Array (VLA) at 15 GHz, roughly 40 days after the disruption. We carried out radio observations of AT2020zso with the upgraded Giant Metrewave Radio Telescope in band 4 (550-900 MHz) on 2021 May 30, and in band 5 (1050-1450 MHz) on 2021 June 08. We did not detect radio emission at the low-frequencies and the 3-sigma upper limits at the TDE position (https://www.wis-tns.org/object/2020zso) are 46.59 microJy and 51.15 microJy at the central frequencies of 0.65 and 1.26 GHz, respectively. It indicates that the radio emission at these frequencies is probably absorbed at the present epoch and likely to reveal itself later. We thank the staff of the uGMRT who made these observations possible. uGMRT is run by the National Centre for Radio Astrophysics of the Tata Institute of Fundamental Research.
