[vsnet-grb-info 25371] GRB 200325B: further Swift-XRT observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27471
SUBJECT: GRB 200325B: further Swift-XRT observations
DATE:    20/04/01 14:42:38 GMT
FROM:    Paolo D'Avanzo at INAF - OAB  <paolo.davanzo at inaf.it>

A. D'Ai (INAF-IASFPA), A. Tohuvavohu (U. Toronto), B. Sbarufatti (PSU),
D.N. Burrows (PSU), J.P. Osborne (U. Leicester), K.L. Page (U.
Leicester), A.P. Beardmore (U. Leicester), A. Melandri (INAF-OAB), T.
Sbarrato (INAF-OAB) and P.A. Evans (U. Leicester) report on behalf of
the Swift-XRT team:

Swift-XRT has performed further follow-up observations of the
GBM-detected burst GRB 200325B (Fermi GBM team, GCN Cir. 27441),
collecting overall 4.6 ks of Photon Counting (PC) mode data between
T0+102.4 ks and T0+505.5 ks. 

The uncatalogued X-ray source (Source 1) reported in D'Avanzo et al.
(GCN Circ. 27457) has faded with alpha >1.2, confirming that this is
the GRB afterglow. 

The results of the XRT-team automatic analysis of the afterglow are at
https://www.swift.ac.uk/ToO_GRBs/00020978/Source1.php.
The results of the full analysis of the XRT observations are available
at https://www.swift.ac.uk/ToO_GRBs/00020978.

This circular is an official product of the Swift-XRT team.