[vsnet-grb-info 3281] GRB 060510A: Swift/UVOT Detection of an Optical Afterglow

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5116
SUBJECT: GRB 060510A: Swift/UVOT Detection of an Optical Afterglow
DATE:    06/05/12 12:31:19 GMT
FROM:    Stephen Holland at USRA/NASA/GSFC/SSC  <sholland at milkyway.gsfc.nasa.gov>

GRB 060510A: Swift/UVOT Detection of an Optical Afterglow

S. T. Holland (NASA/GSFC & USRA) reports on behalf of the Swift/UVOT
team:

      The Swift UVOT began observing GRB 060510A (trigger #209351,
Krimm et al., GCN Circular 5095) 82 seconds after the BAT trigger.  We
detect the UVOT optical transient reported in the above Circular in
the White, V-, and U-band filters.  The J2000 coordinates of the
afterglow are

RA =  06:23:27.98
Dec = -01:09:46.2

with an uncertainty of +/- 0.56 arcseconds (90% containment).

Magnitudes and 3-sigma upper limits are reported below.

          Midpoint   Coadded                Upper
Filter     Time     Exposure   Mag  Err    Limit
           (sec)      (sec)               (3 sigma)
V           405        394    18.38 0.13
V          1060        394    18.85 0.16
B           688         10                  18.4
B          1503         20                  19.2
U           817         20    18.06 0.40
U          1479         20                  18.3
UVW1        645         20                  17.1
UVW1        793         20                  17.4
UVM2        769         20                  17.5
UVM2       1431         20                  17.6
UVW2        721         20                  17.6
UVM2       1384         20                  17.7
White       150         99    18.04 0.15
White       702         10    18.24 0.50
White      1318         99    18.87 0.18
White      1521         10    18.12 0.40
White      1680         10                  18.7

No correction has been made for the Galactic reddening of E(B-V) =
0.42 mag (Schlegel et al. 1998) along the line of sight to GRB
060510A.