GCN Circular 41119

S. Dichiara (PSU), J.A. Kennea (PSU), K.L. Page (U. Leicester), A.P.
Beardmore (U. Leicester), S. Campana (INAF-OAB), A. Melandri
(INAF-OAR), T. Sbarrato (INAF-OAB), D.N. Burrows (PSU) and P.A. Evans
(U. Leicester) reports on behalf of the Swift-XRT team:

Swift-XRT has performed follow-up observations of the
Fermi/GBM-detected burst GRB 250717B, collecting  2.8 ks of Photon
Counting (PC) mode data between T0+27.9 ks and T0+34.0 ks. 

One uncatalogued X-ray source has been detected within the estimated
BAT-GUANO error region (3 arcmin), 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 1:
  RA (J2000.0):  44.1037  =  02:56:24.88
  Dec (J2000.0): +26.3758  =  +26:22:32.8
  Error: 8.9 arcsec (radius, 90% conf.)
  Count-rate: (1.90 [+1.27, -0.91])e-3 ct s^-1	 
  Distance: 47 arcsec from BAT-GUANO position.

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/00021846.

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