{
  "subject": "GRB 250108A: Swift/XRT afterglow fading",
  "format": "text/plain",
  "submitter": "Tullia Sbarrato at INAF-OAB <tullia.sbarrato@inaf.it>",
  "circularId": 38898,
  "eventId": "GRB 250108A",
  "bibcode": "2025GCN.38898....1S",
  "body": "Tullia Sbarrato (INAF-OAB) & Noel Klinger (GSFC/UMBC/CRESSTII)\nreport on behalf of the Swift-XRT team:\n\nSwift-XRT has performed further follow-up observations of the\nSVOM/ECLAIRs GRB 250108A (Zheng et al., GCN 38845), \ncollecting 6.6 ks of Photon Counting (PC) mode data between \nT0+16.1 ks and T0+192.1 ks. \n\nThe X-ray source detected in the first 2.7 ks of data reported as \n“Source 1” and presented as possible GRB afterglow candidate \n(Ambrosi et al., GCN 38853) has faded more than 2 sigma \nin the latest observation, and it is thus confirmed as the \nX-ray afterglow of the burst.\n\nThe results of the XRT-team automatic analysis are available at\nhttp://www.swift.ac.uk/xrt_products/00021755.\n\nThis circular is an official product of the Swift-XRT team.\n",
  "submittedHow": "web",
  "createdOn": 1736530088494
}