GCN Circular 24684
Subject
GRB 190530A: Bright afterglow confirmed by OSN
Date
2019-05-30T21:58:06Z (5 years ago)
From
Alexander Kann at IAA-CSIC <kann@iaa.es>
D. A. Kann, L. Izzo (both HETH/IAA-CSIC), A. de Ugarte Postigo
(HETH/IAA-CSIC, DARK/NBI), M. Blazek, C. C. Thoene, K. Bensch (all
HETH/IAA-CSIC), and V. Casanova (IAA-CSIC) report:
We observed the afterglow position (Lipunov et al., GCN 24680) of the
extremely bright GRB 190530A (GBM detection and localization: Fermi GBM
team, GCN 24676, Biltzinger et al., GCN 24677; Fermi-LAT localization:
Longo et al., GCN 24679; Agile-MCAL/GRID detections: Lucarelli et al.,
GCN 24678, Verecchia et al., GCN 24683) with the 1.5-m telescope of the
Sierra Nevada Observatory (OSN), Spain. The afterglow is well-detected.
We measure the following AB magnitude:
Rc = 17.63 +- 0.10 mag at 0.437314 days after the GRB.
The magnitude were derived against 1 nearby star from the SDSS catalog,
using the transformation equations of Lupton (2005), and transformed
back into AB mag.
We note this is an exceedingly bright afterglow, further follow-up is
encouraged despite the bad visibility.