NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 241010d18h01m07s262947usUT
NOTE: Source region spec. is: 153.38141 11.53429 3"
NOTE: Used archived uvot source position of 153.38141  11.53429  3.00
NOTE: position reference is GCN_Circ_37755
NOTE: A UVOT position was reported in GCN_Circ_37755
NOTE: Possible detection in wh at T+105.4
NOTE: Possible detection in uu at T+317.3
NOTE: Possible detection in w1 at T+4883.1 sum

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

GRB 241010A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and S. Dichiara (PSU)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 241010A
105 s after the BAT trigger (Dichiara et al., GCN Circ. 37755).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-37757 ***
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           105          255          147         >18.3
u_FC               317          547          226         >17.9
white              105         4263          344         >18.9
v                  647         4673          216         >18.9
u                  317         5128          265         >18.0
w1                 696         5083          216         >18.6
m2                4678         4878          197         >18.9
w2                4269         4468          197         >19.3

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.039 in the direction of the burst
(Schlegel et al. 1998).


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

GRB 241010A: Swift/UVOT Detection

***UBS*** (***INSTITUTION***) and S. Dichiara (PSU)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 241010A
105 s after the BAT trigger (Dichiara et al., GCN Circ. 37755).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-37757 ***
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  10:13:31.55 = 153.38145 (deg.)
    Dec (J2000) = +11:32:03.3  =  11.53424 (deg.)
with an estimated uncertainty of 0.49 arc sec. (radius, 90% confidence).

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

white              105          255          147         18.56 +/- 0.09
v                  647         4673          216        >18.9
u                  317          547          226         18.31 +/- 0.15
w1                 696         5083          216         19.30 +/- 0.32
m2                4678         4878          197        >18.9
w2                4269         4468          197        >19.3

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.039 in the direction of the burst
(Schlegel et al. 1998).