GCN Circular 3295
Subject
GRB 050416b: Tentative Swift XRT Position
Date
2005-04-20T21:18:36Z (19 years ago)
From
Jamie A. Kennea at PSU/Swift-XRT <kennea@astro.psu.edu>
J. A. Kennea, C. P. Hurkett, D. N. Burrows (PSU), V. Mangano
(IASF/Palermo), T. Sakamoto (GSFC/NRC), N. Gehrels (NASA/GSFC) report on
behalf of the Swift XRT team:
The Swift BAT instrument detected a GRB at 22:35:54 UT on 16th April 2005
(GCN Circ 3279). Due to the close proximity of this burst to the moon, the
observatory did not executed an automated slew at that time. This burst
became visible to Swift Narrow Field Instruments at 12:48:00 UT on 20th
April 2005, and was observed by Swift-XRT as a pre-planned target. From
ground processed data we find a uncatalogued X-ray source within the BAT
error circle, located at:
RA(J2000) = 08:55:35.2,
Dec(J2000) = +11:10:32.
We estimate an uncertainty of about 5 arcseconds radius (90% containment).
This position is 152 arcseconds from the BAT position reported in GCN
3284. This source should be considered a tentative afterglow candidate, we
are currently performing further observations to determine if the source
is fading.