[vsnet-grb-info 14223] GRB 131128A: Nanshan afterglow confirmation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15537
SUBJECT: GRB 131128A: Nanshan afterglow confirmation
DATE:    13/11/28 17:21:23 GMT
FROM:    Dong Xu at DARK/NBI  <dong.dark at gmail.com>

D. Xu (DARK/NBI), H.-B. Niu, J.-Z. Liu, G.-J. Feng, C.-H. Bai, A.
Esamdin, L. Ma (XAO) report:

Continued observations of GRB 131128A, 120s each for the beginning and
240s each for the subsequent all in R-band, at the Nanshan observatory
show that the afterglow candidate in Xu et al (GCN 15535) has decayed
by more than 1 magnitude at 1.95 hr after the Swift trigger,
calibrated with the same nearby SDSS stars. The initial magnitude is
R~19 mag in GCN 15535. We thus conclude that this object is the
optical afterglow of GRB 131128A.