GCN Circular 5050
Subject
GRB060501: Swift UVOT followup observations
Date
2006-05-02T08:48:01Z (18 years ago)
From
Alice Breeveld at MSSL-UCL <aad@mssl.ucl.ac.uk>
A. Breeveld (UCL-MSSL), V. La Parola (INAF-IASFPA), D. Vanden Berk
(PSU), F. Marshall (GSFC), on behalf of the SWIFT UVOT team:
The Swift/UVOT began taking data on the field of GRB060501 3296s after
the BAT trigger (which includes the 10s V settling exposure). Swift did
not slew immediately after the trigger because of an earth constraint
(La Parola et al., GCN 5040). At the edge of the refined XRT error
circle (La Parola et al., GCN 5042) there are two optical sources which
are already present in the USNO B1.0 catalogue, but in the summed images
there are no new sources within the error circle to the following 5
sigma upper limits:
Filter T_range(s) Exp(s) 5sig_UL(mag)
V 3296-16535 927.6 19.3
B 3626-3825 196.6 19.5
U 3422-10542 723.7 19.9
UVW1 9097-9996 885.5 20.0
UVM2 4445-4571 124.1 19.3
UVW2 4036-15788 1082.2 20.5
White (160-650nm) 3313-4030 394.6 20.0
These upper limits are uncorrected for the estimated Galactic reddening
of E(B-V) = 0.282 mags.