NOTE: uvot_fluxes_wget.pl vrs. 2018-11-07 fem at 190324d17h36m44s270326usUT NOTE: Source region spec. is: 40.13296 61.22894 4" NOTE: Used archived XRT position of 40.13296 61.22894 4.00 NOTE: position reference is GRB_Auto_Processing NOTE: Possible detection in uu at T+302.0 NOTE: Possible detection in wh at T+89.5 NOTE: Possible detection in bb at T+557.6 NOTE: Possible detection in w1 at T+681.9 NOTE: Possible detection in vv at T+632.1 NOTE: Possible detection in w2 at T+607.6 NOTE: Possible detection in m2 at T+657.1 =========== Draft Upper Limit Circular ======== GRB 190323: Swift/UVOT Upper Limits J. D. Gropp (PSU) and ***BA*** (***BA INSTITUTION***) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 190323 90 s after the BAT trigger (***Author*** et al., GCN Circ. ????). No optical afterglow consistent with the XRT position *** POSITION REFERENCE is GRB_Auto_Processing *** 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 90 239 147 >15.0 u_FC 302 552 246 >11.6 white 90 6274 626 >14.8 v 632 6489 179 >11.1 b 558 6069 352 >12.8 u 302 5863 579 >11.7 w1 682 5658 333 >12.0 m2 657 2126 172 >13.2 w2 608 6480 372 >12.9 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 1.54 in the direction of the burst (Schlegel et al. 1998). =========== Draft Detection Circular ======== GRB 190323: Swift/UVOT Detection J. D. Gropp (PSU) and ***BA*** (***BA INSTITUTION***) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 190323 90 s after the BAT trigger (***Author*** et al., GCN Circ. ????). A source consistent with the XRT position *** POSITION REFERENCE is GRB_Auto_Processing *** is detected in the initial UVOT exposures. 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 90 239 147 15.00 +/- 0.02 v 632 652 20 11.14 +/- 0.06 b 558 577 20 12.42 +/- 0.06 u 302 552 246 11.62 +/- 0.02 w1 682 702 20 12.00 +/- 0.04 m2 657 677 20 13.18 +/- 0.06 w2 608 627 20 12.75 +/- 0.04 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 1.54 in the direction of the burst (Schlegel et al. 1998).