[vsnet-grb-info 20805] GRB 180705A: Swift-XRT observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  22903
SUBJECT: GRB 180705A: Swift-XRT observations
DATE:    18/07/05 17:10:37 GMT
FROM:    Phil Evans at U of Leicester  <pae9 at leicester.ac.uk>

J.A. Kennea (PSU), G. Tagliaferri (INAF-OAB), S. Campana (INAF-OAB),
P.A. Evans (U. Leicester), J.P. Osborne (U. Leicester) and D.N. Burrows
(PSU) report on behalf of the Swift-XRT team:

The XRT began observing the field of GRB 180705A at 16:37:18.4 UT,
3363.7 seconds after the BAT trigger. Using promptly downlinked data we
find an uncatalogued X-ray source located at RA, Dec 212.61326,
-11.64841 which is equivalent to:
   RA(J2000)  = 14h 10m 27.18s
   Dec(J2000) = -11d 38' 54.3"
with an uncertainty of 4.3 arcseconds (radius, 90% containment). This
location is 94 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 http://www.swift.ac.uk/sper.  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.