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GCN Circular 13593

Subject
GRB 120802A: Swift/UVOT Upper Limits
Date
2012-08-06T12:36:40Z (12 years ago)
From
Stephen Holland at STScI <sholland@stsci.edu>
S. T. Holland (STScI)
reports on behalf of the Swift/UVOT team:

     The Swift/UVOT observed the field of GRB 120802A starting 70 s
after the BAT trigger (Holland et al., 2012, GCNC 13555).  Settled
observations started at 87 s.  We do not detect any source inside the
UVOT-enhanced XRT error circle (Evans et al., 2012, GCNC 13558).
Preliminary magnitudes 3-sigma upper limits at this location for the
finding charts (FC) and the co-added images, are

Filter       TSTART   TSTOP   Exp Time    3-sigma UL
----------------------------------------------------
white (FC)      87      237        147         >20.8
    u (FC)     300      550        246         >19.9
----------------------------------------------------
    v          630   16,594       1317         >20.5
    b          555     6625        332         >20.4
    u          300     6548        658         >20.5
 uvw1          678   17,567        492         >20.4
 uvm2         4504   17,499       1279         >21.2
 uvw2         4095   11,737       1279         >21.4
white           87   10,731       1268         >22.1
----------------------------------------------------

    The quoted magnitudes and upper limits have not been corrected for
the Galactic extinction along the line of sight to this burst of
E_{B-V} = 0.14 mag (Schlafly et al. 2011, ApJS, 737, 103).
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