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GCN Circular 5158

Subject

GRB 060522: Swift/UVOT Observations of the Optical Afterglow

Date

2006-05-23T16:26:10Z (18 years ago)

From

Stephen Holland at USRA/NASA/GSFC/SSC <sholland@milkyway.gsfc.nasa.gov>

GRB 060522: Swift/UVOT Observations of the Optical Afterglow

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

       The Swift UVOT began observing GRB 060522 (trigger #211117,
Fox et al., GCN Circular 5150Not found
 
 
) 129 seconds after the BAT trigger.
We detect the UVOT optical transient reported in the above Circular
in the White filter.  The J2000 coordinates of the afterglow are

  RA =  21:31:44.85
Dec = +02:31:44.9

with an uncertainty of +/- 0.6 arcseconds (90% containment).

Magnitudes and 3-sigma upper limits are reported below.

           Midpoint   Coadded
Filter     Time     Exposure    Mag   Err
            (sec)      (sec)
White        198       100     19.65 0.21
White        749         9    >18.4         3-sigma upper limit
White        927        98    >20.3         3-sigma upper limit
White       6266       197    >20.9         3-sigma upper limit
White     74,157      4766    >22.1         3-sigma upper limit
V            452       400    >20.1         3-sigma upper limit
V            792        20    >17.6         3-sigma upper limit
V           1100       231    >19.5         3-sigma upper limit
V         18,351      1967    >20.8         3-sigma upper limit
B           3447       206    >20.7         3-sigma upper limit
U         18,315      1451    >21.0         3-sigma upper limit
UVW1      17,925      2904    >22.0         3-sigma upper limit
UVM2      17,533      1944    >21.9         3-sigma upper limit
UVW2      23,194      2001    >21.7         3-sigma upper limit

      These data are consistent with the burst having a redshift of
z = 5.11 (Cenko et al., 2006, GCN Circular 5155Not found
 
 
).  No correction
has been made for the Galactic reddening of E(B-V) = 0.05 mag
(Schlegel et al. 1998) along the line of sight to GRB 060522.