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GCN Circular 27884

GRB 200529A: Swift/UVOT Upper Limits
2020-06-03T01:43:27Z (4 years ago)
Kira Simpson at PSU <>
GRB 200529A: Swift/UVOT Upper Limits

K. K. Simpson (PSU) and V. D'Elia (SSDC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 200529A
195 s after the BAT trigger (D'Elia et al., GCN Circ. 27845).
No optical afterglow consistent with the optical position
(Malesani et al. GCN Circ. 27846)
is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first
finding chart (FC) exposure and subsequent exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC           216          360          142         >19.8
white              216          360          142         >19.8
v                  195         3771          209         >19.1
b                 4392         4495          102         >19.5
u                 4187         4386          197         >19.7
w1                3982         4182          197         >19.0
m2                3777         3977          197         >20.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.29 in the direction of the burst
(Schlegel et al. 1998).
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