GCN Circular 3514
Subject
GRB 050603: Swift XRT Position
Event
Date
2005-06-03T20:10:04Z (21 years ago)
From
Judith Racusin at PSU <racusin@astro.psu.edu>
J. L. Racusin, D. N. Burrows, J. A. Kennea, A. Retter (PSU), C. Pagani
(INAF-OAB), A. Wells (U. Leicester), N. Gehrels (NASA/GSFC) report on
behalf of the Swift XRT team:
The Swift BAT detected GRB 050603 at 06:29:05.2 UT on June 3rd 2005 (GCN
3509, Retter et al.). The Swift observatory did not slew promptly because
automated slewing was not enabled due to engineering tests. The XRT began
taking data at 17:19:27 UT, approximately 11 hours after the trigger. In
a preliminary data analysis we detect an uncataloged X-ray source located
at:
RA(J2000) = 2:39:56.6,
Dec(J2000) = -25:10:52.5
We estimate an uncertainty of 8 arcseconds radius (90% containment).
This position is 51 arcseconds from the BAT refined position reported by
Fenimore et al. (GCN 3512), 5.6 arseconds from the optical afterglow
candidate reported by Berger et al. (GCN 3511), and 4.5 arcseconds from
the radio afterglow candidate reported by Cameron et al. (GCN 3513).
Observations are still underway and further ground analysis will be
performed to determine if this X-ray source is fading.