GCN Circular 13987
Subject
GRB 121123A: BOOTES-4 and IAC80 optical observations
Date
2012-11-23T22:40:22Z (12 years ago)
From
Javier Gorosabel at IAA-CSIC <jgu@iaa.es>
S. Guziy (Mykolaiv Nat. Univ.), R. Sanchez-Ramirez (IAA-CSIC), L.
Monteagudo Narvion (IAC), O. Lara, M. Jelinek (IAA-CSIC), P. Kubanek (IP
AS CR), Y. Fan, X. Zhao, J. Bai, C. Wang, Y. Xin (Yunnan National
Astronomical Observatory), Chenzhou Cui (Beijing National Astronomical
Observatory), R. Cunniffe, A.J. Castro-Tirado, J.C. Tello and J. Gorosabel
(IAA-CSIC), on behalf of a larger collaboration, report:
We have observed the GRB 121123A optical afterglow (GCN 13982, Helder et
al.) with the 0.6m BOOTES-4/MET robotic telescope at the Lijiang
Astronomical Observatory (China) and with the 0.82m IAC80 telescope
(Tenerife, Spain). The afterglow is detected as follows:
Tel. Date Nov To-Tgrb Texp Filter Mag(Vega)
UT-start (hr) (s)
--------------------------------------------------------
BOOTES-4 23.5196 2.43 5x120 r 18.87 +/- 0.15
BOOTES-4 23.5711 3.66 5x120 r 19.01 +/- 0.15
IAC80 23.7853 8.80 4x300 I 18.90 +/- 0.12
Our measurements confirm the shallow decay reported by Xu et al. (GCN 13986).