GCN Circular 23884
Subject
GRB 190211A: NEXT-0.6m optical afterglow detection
Date
2019-02-11T18:00:56Z (5 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
D. Xu, B.Y. Yu (NAOC), J.H. Liu (XAO), Z.P. Zhu, B.J. Xi (NAOC), X. Gao
(Urumqi No.1 Senior High School) report on behalf of a larger collaboration:
We observed the field of GRB 190211A (Marshall et al., GCN 23883) using
the robotic NEXT-0.6m telescope located at Nanshan, Xinjiang, China.
Observations started at 16:56:38 UT on 2019-02-11, i.e., 114 s after the
BAT trigger. A series of 40 s, 60 s, 90 s, and 300 s R-band exposures
were obtained and observations are ongoing.
An uncatalogued and fading optical source is detected at coordinates
R.A. (J2000) = 13:06:38.47
Dec. (J2000) = +41:58:04.93
with an error of the radius ~ 0.3 arcsec, being consistent with the XRT
position (Marshall et al., GCN 23883). The source has m(R)~17.8 mag from
our first 40s exposure. We thus conclude this source is the optical
afterglow of the burst.