NOTE: uvot_fluxes_wget.pl vrs. 2024-08-27 fem at 251008d05h57m57s695317usUT
NOTE: Source region spec. is: 128.17665 21.81280 3"
NOTE: Used archived uvot source position of 128.17665  21.81280  3.00
NOTE: position reference is GCN_Circ_42146
NOTE: A UVOT position was reported in GCN_Circ_42146
NOTE: Possible detection in uu at T+290.9
NOTE: Possible detection in wh at T+78.7

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

GRB 251007A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and Ambrosi (INAF-IASFPA)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 251007A
79 s after the BAT trigger (Ambrosi et al., GCN Circ. 42146).
No optical afterglow consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-42146 ***
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            79          228          147         >18.3
white               79          228          147         >18.3
u                  291          418          125         >18.2

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 251007A: Swift/UVOT Detection

***UBS*** (***INSTITUTION***) and Ambrosi (INAF-IASFPA)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 251007A
79 s after the BAT trigger (Ambrosi et al., GCN Circ. 42146).
A source consistent with the XRT position
*** POSITION REFERENCE is GCN_Circulars-42146 ***
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  08:32:42.39 = 128.17664 (deg.)
    Dec (J2000) = +21:48:46.3  =  21.81285 (deg.)
with an estimated uncertainty of 0.45 arc sec. (radius, 90% confidence).

Preliminary detections 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               79          228          147         18.45 +/- 0.06
u                  291          418          125         18.72 +/- 0.19

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).