GCN Circular 3537
Subject
Swift/UVOT observations of GRB050607
Date
2005-06-08T10:58:45Z (19 years ago)
From
Alexander Blustin at MSSL-UCL <ajb@mssl.ucl.ac.uk>
Ivanushkina, M., Retter, A. (PSU), McGowan, K., Blustin, A.
(MSSL), Gehrels, N. (NASA/GSFC) on behalf of the Swift
UVOT team
The Swift Ultra-Violet/Optical Telescope (UVOT) began
observations of GRB050607 on June 7, 2005 at 22:36:23 UT,
~12 hours and 25 minutes after the initial Swift BAT trigger
(Retter et al., GCN 3525) as an uploaded ToO. Immediate data
from UVOT were not available due to the instrument being in
an engineering mode.
No optical counterpart is detected at the afterglow position
(Rhoads, GCN 3527) in summed images from any filter down to
the following 3-sigma upper limits:
Filter 3-sig UL Exposure (s) T_mid (s)
V 20.21 2036 51530
B 20.95 897 46942
U 20.18 771 42806
UVW1 20.95 900 41963
UVM2 21.33 1482 46727
UVW2 21.30 900 47844
Where T_mid is the mid-time of the summed exposure in seconds
after the BAT trigger.
The magnitudes are based on preliminary zero-points,
measured in orbit, and will require refinement with
further calibration.