GCN Circular 3150
Subject
GRB 050326: Early observations with Swift-UVOT
Date
2005-03-27T00:56:18Z (19 years ago)
From
Patricia Schady at MSSL/Swift <ps@mssl.ucl.ac.uk>
S. T. Holland, M. Still (GSFC/USRA), W. Landsman (GSFC), Adam Morgan,
S. Hunsberger (PSU), A. Breeveld (MSSL), P. Roming (PSU), K. Mason,
P. Schady (MSSL), M. Ivanushkina (PSU), T. Poole (MSSL), C. Gronwall (PSU), A.
Blustin (MSSL), P. Brown (PSU), S. Rosen, K. McGowan, M. De Pasquale (MSSL),
P.Boyd (GSFC/UMBC), M. Carter, H. Huckle (MSSL), P. Broos (PSU), T. Kennedy, P.
Smith, B. Hancock (MSSL), H. Krimm (GSFC/USRA), S. Kock (PSU), K. Gendreau
(GSFC), M.Chester (PSU), J. Nousek (PSU), N. Gehrels (GSFC), on behalf of the
Swift UVOT team.
The Swift Ultra-Violet/Optical Telescope (UVOT) began observing the field of
GRB 050326 (GCN 3143) at 10:48:16 UT. The burst was within the Earth-limb
constraint at the time of the BAT trigger and therefore Swift did not slew to
this burst for about another 54 minutes. We detect no source at the location of
the X-ray position (GCN 3147) in any filter. The 5-sigma limiting magnitude for
the first 100s exposure taken in the V-filter is V > 18.91 +/- 0.12 mag, based
on preliminary in-orbit zero points.