GCN Circular 19407
Subject
GRB 160509A: Preliminary XRT positon
Event
Date
2016-05-09T14:20:01Z (10 years ago)
From
Jamie A. Kennea at PSU/Swift-XRT <kennea@swift.psu.edu>
J. A. Kennea (PSU) reports on behalf of the Swift team:
Swift performed a target of opportunity observation of the Fermi/LAT
detected GRB 160509A (GCN 19403). In rapid analysis of XRT downlinked data
we find a bright uncatalogued point source at the following location:
RA/Dec (J2000) = 311.74406, 76.10634, which is equivalent to:
RA(J2000) = 20h 46m 58.6s
Dec(J2000) = +76d 06m 22.8s
with an estimated uncertainty of 8 arcseconds (90% confidence). This
position lies 24.6' away from the LAT onboard position, and 8 arcminutes
from a LAT ground refined position (Racusin, private communication), so
we suggest this is likely the afterglow of GRB 160509A. A refined position
will be issued soon. Swift observations of this burst are on-going.