TITLE: GCN CIRCULAR NUMBER: 38898 SUBJECT: GRB 250108A: Swift/XRT afterglow fading DATE: 25/01/10 17:28:08 GMT FROM: Tullia Sbarrato at INAF-OAB tullia.sbarrato@inaf.it
Tullia Sbarrato (INAF-OAB) & Noel Klinger (GSFC/UMBC/CRESSTII) report on behalf of the Swift-XRT team:
Swift-XRT has performed further follow-up observations of the SVOM/ECLAIRs GRB 250108A (Zheng et al., GCN 38845), collecting 6.6 ks of Photon Counting (PC) mode data between T0+16.1 ks and T0+192.1 ks.
The X-ray source detected in the first 2.7 ks of data reported as “Source 1” and presented as possible GRB afterglow candidate (Ambrosi et al., GCN 38853) has faded more than 2 sigma in the latest observation, and it is thus confirmed as the X-ray afterglow of the burst.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00021755.
This circular is an official product of the Swift-XRT team.
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