GCN Circular 3268
Subject
GRB 050416: Swift XRT Position
Date
2005-04-16T13:55:53Z (19 years ago)
From
Jamie A. Kennea at PSU/Swift-XRT <kennea@astro.psu.edu>
J. A. Kennea, J. L. Racusin, 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 11:04:45 UT on 16th April 2005
(GCN Circ 3264). The observatory executed an automated slew to the BAT
position and the XRT began taking data at 11:06:03 UT. The XRT was in
Auto state but was not able to centroid on the afterglow due to low source
brightness. From downlinked data we find a uncataloged fading X-ray source
located at:
RA(J2000) = 12:33:54.6,
Dec(J2000) = +21:03:24.
We estimate an uncertainty of about 5 arcseconds radius (90% containment). This
position is 49 arcseconds from the BAT position reported in GCN 3264, and
2.7 arcseconds from the P60 optical afterglow candidate reported in GCN
3265.