NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 190519d14h27m35s871448usUT
NOTE: Source region spec. is: 114.76725 -38.80519 4"
NOTE: Used archived XRT position of 114.76725 -38.80519  4.00
NOTE: position reference is GCN_Circulars-24595
NOTE: Possible detection in bb at T+1604.9

=========== Draft Upper Limit Circular ========

GRB 190519A: Swift/UVOT Upper Limits

J. D. Gropp (PSU) and T. N. Ukwatta (LANL)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 190519A
150 s after the BAT trigger (Ukwatta et al., GCN Circ. 24595).
No optical afterglow consistent with the XRT position
(Ukwatta et al. GCN Circ. 24595)
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

u_FC               150          400          246         >18.9
v                  456         2571          272         >18.7
b                  406         2520          272         >19.7
u                  150         2495          646         >19.5
w1                 505         2610          262         >19.5
m2                 481         2595          272         >19.1
w2                 432         2546          272         >19.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.42 in the direction of the burst
(Schlegel et al. 1998).


=========== Draft Detection Circular ========

GRB 190519A: Swift/UVOT Detection

J. D. Gropp (PSU) and T. N. Ukwatta (LANL)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 190519A
150 s after the BAT trigger (Ukwatta et al., GCN Circ. 24595).
A source consistent with the XRT position
(Ukwatta et al. GCN Circ. 24595)
is detected in the initial UVOT exposures.

Preliminary detections and 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: 

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

v                  456         2571          272        >18.7
b                 1605         1625           19         18.65 +/- 0.31
u                  150         2495          646        >19.5
w1                 505         2610          262        >19.5
m2                 481         2595          272        >19.1
w2                 432         2546          272        >19.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.42 in the direction of the burst
(Schlegel et al. 1998).