[vsnet-grb-info 3746] GRB060919: Swift/UVOT optical observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5580
SUBJECT: GRB060919:  Swift/UVOT optical observations
DATE:    06/09/20 10:58:39 GMT
FROM:    Pete Roming at PSU  <roming at astro.psu.edu>

A. Breeveld (MSSL/UCL) and C. Guidorzi (Univ Bicoca&INAF-OAB) report on 
behalf of the Swift/UVOT team:

The Swift/UVOT began taking data on 2006-09-19 73s after the burst 
(Guidorzi et al. GCN 5575). At the position of the XRT error circle 
(Guidorzi et al. GCN 5577) there are no new sources. In the summed UVOT 
images we obtain the following 3 sigma upper limits:

Filter          T_range(s)      Exp(s)          3sig_UL(mag)
V               73-11544        2310            20.24
B               674-24585       1330            21.02
U               650-24547       2202            20.88
UVW1    626-23633       1869            20.99
UVM2    602-12448       1134            21.10
UVW2    703-7232        424             20.65
White   91-18800        982.1           21.00
(160-650 nm)
These magnitudes are not corrected for the expected extinction of E(B-V)=0.072