GCN Circular 15544
Subject
GRB 131128A: AROMA-N Optical Observation
Date
2013-11-29T11:17:17Z (10 years ago)
From
Takanori Sakamoto at AGU <tsakamoto@phys.aoyama.ac.jp>
D. Kawamura, T. Sakamoto, I. Takahashi, S. Sugai, A. Yoshida (AGU)
We observed the field of GRB 131128A detected by Swift (trigger #579683;
Sonbas et al., GCN Circ. 15533) with the 12-inch AGU Robotic Optical
Monitor for Astrophysical object - Narrow (AROMA-N) located at the Sagamihara
campus of Aoyama Gakuin University.
60 images of 10 sec exposures were taken in the R filter starting from
November 28 15:12:47 (UT) about 383 sec after the trigger
(77 sec after the BAT position notice) and stopped on November 28 15:30:30 (UT).
We do not detect the optical afterglow both in the individual images and
the stacked image inside the enhanced XRT position (Evans, et al., GCN #15538).
The estimated five sigma upper limit of the combined image (total exposure of 600 sec)
is ~16.2 mag using the USNO-B1 catalog.