TITLE: GCN CIRCULAR NUMBER: 43304 SUBJECT: GRB 260102A: Swift-XRT observations DATE: 26/01/02 14:37:52 GMT FROM: Phil Evans at U of Leicester <pae9@star.le.ac.uk> M.G. Bernardini (INAF-OAB), S. Dichiara (PSU), J.A. Kennea (PSU), D.N. Burrows (PSU), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester), E. Ambrosi (INAF-IASFPA) , M. Capalbi (INAF-OAR) and P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team: Swift-XRT has performed follow-up observations of the SVOM/ECLAIRs-detected burst GRB 260102A, collecting 2.8 ks of Photon Counting (PC) mode data between T0+9.6 ks and T0+26.1 ks. One uncatalogued X-ray source has been detected within the estimated 3-sigma SVOM/ECLAIRs error region (502 arcsec), it is below the RASS limit and shows no definitive signs of fading. Therefore, at the present time we cannot confirm this as the afterglow. Details of this source are given below: Source 2: RA (J2000.0): 183.9493 = 12h 15m 47.82s Dec (J2000.0): +48.2506 = +48d 15' 02.1" Error: 6.2 arcsec (radius, 90% conf. [Enhanced position]) Count-rate: (6.3 [+2.2, -1.8])e-3 ct s^-1 Distance: 167 arcsec from SVOM/ECLAIRs position. Flux: (1.72 [+0.59, -0.48])e-13 erg cm^-2 s^-1 (observed, 0.3-10 keV) SVOM/VT detected an optical counterpart consistent with this X-ray source (GCN Circ. 43300). An uncatalogued source was also detected, however this was too far from the GRB position to be the afterglow. 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/00021896. This circular is an official product of the Swift-XRT team. View this GCN Circular online at https://gcn.nasa.gov/circulars/43304. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...