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GCN Circular 19578

GRB 160625A: Swift-XRT observations
2016-06-25T23:51:03Z (8 years ago)
Phil Evans at U of Leicester <>
D.N. Burrows (PSU), J.A. Kennea (PSU), S. Campana (INAF-OAB), G.
Cusumano (INAF-IASF PA), P.A. Evans (U. Leicester) and J.P. Osborne (U.
Leicester) report on behalf of the Swift-XRT team:

The XRT began observing the field of GRB 160625A at 23:02:36.8 UT,
1325.3 seconds after the BAT trigger. Using promptly downlinked data we
find an uncatalogued X-ray source located at RA, Dec 176.91418,
-65.14362 which is equivalent to:
   RA(J2000)  = 11h 47m 39.40s
   Dec(J2000) = -65d 08' 37.0"
with an uncertainty of 5.8 arcseconds (radius, 90% containment). This
location is 112 arcseconds from the BAT onboard position, within the
BAT error circle. This position may be improved as more data are
received; the latest position is available at  We cannot determine whether the source is
fading at the present time. No spectrum from the promptly downlinked
event data is yet available to determine the column density.
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