GCN Circular 30066
Subject
GRB210413B: further Swift-XRT observations
Date
2021-05-21T14:38:33Z (3 years ago)
From
Antonino D'Ai at IASF-PA <antonino.dai@inaf.it>
A. D���Ai (INAF-IASFPA), A. Tohuvavohu (U Toronto)
and M. H. Siegel (PSU) report on behalf of the Swift team:
Swift-XRT has performed further follow-up observations of the
ground-detected burst GRB 200413B (Tohuvavohu et al. GCN
Cir. 29819), collecting a total of 9.2 ks of Photon Counting (PC)
mode data between T0+2.1 days and T0+37 days.
The uncatalogued candidate X-ray source (Source 1) reported
in Kennea et al. (GCN Circ. 29827) which had also a possible
UV counterpart (Siegel, GCN Circ. 29912) is still detected in
XRT at a count rate consistent with the first observations.
We thus rule out a possible association with the burst.
The results of the XRT-team automatic analysis are at
https://www.swift.ac.uk/ToO_GRBs/00021428/
This circular is an official product of the Swift-XRT team.