GRB 190530A: Swift/UVOT Detection
Abstract
The Swift/UVOT began settled observations of the field of GRB 190530A 33.8 ks after the LAT trigger (GCN Circ. 24676). A fading source consistent with the optical counterpart first reported by Lipunov et al. (GCN Circ. 24680) is detected in the initial UVOT exposures. The preliminary UVOT position is: RA (J2000) = 08:02:07.70 = 120.53209 (deg.) Dec (J2000) = +35:28:46.8 = 35.47968 (deg.) with an estimated uncertainty of 0.49 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 v 56532 56734 199 18.49 +/- 0.23 b 38334 38490 153 18.06 +/- 0.09 u 38132 38329 194 17.09 +/- 0.06 w1 37734 38128 388 16.89 +/- 0.06 w2 44276 44610 329 17.39 +/- 0.08 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.05 in the direction of the burst (Schlegel et al. 1998).
- Publication:
-
GRB Coordinates Network
- Pub Date:
- June 2019
- Bibcode:
- 2019GCN.24703....1S