GRB 220810A: Swift-XRT observations
Abstract
Swift-XRT has performed follow-up observations of the second optical afterglow candidate observed by MeerLICHT (de Wet et al. GCN Circ. 32460) of the Fermi/GBM detected burst GRB 220810A (Fermi GBM team, GCN 32455), collecting 4.9 ks of Photon Counting (PC) mode data between T0+156.3 ks and T0+180.2 ks. No X-ray sources have been detected consistent with being within 9.9 arcsec of the MeerLICHT optical afterglow candidate position. The 3-sigma upper limit in the field is 0.003 ct s^-1, corresponding to a 0.3-10 keV observed flux of 1.1e-13 erg cm^-2 s^-1 (assuming a typical GRB spectrum). The results of the XRT-team automatic analysis of the XRT observations, including a position-specific upper limit calculator, are available at https://www.swift.ac.uk/ToO_GRBs/00021510. This circular is an official product of the Swift-XRT team.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2022
- Bibcode:
- 2022GCN.32464....1G