GCN Circular 12935
Subject
GRB 120212A: Kanata/HOWPol optical observation
Date
2012-02-12T13:06:41Z (12 years ago)
From
Koji Kawabata at HASC,Hiroshima U <kawabtkj@hiroshima-u.ac.jp>
K. S. Kawabata, H. Akitaya, M. Yamanaka, K. Takaki, T. Uehara, and
M. Yoshida (Hiroshima Univ.) report on behalf of Kanata team:
We performed a series of optical imaging polarimetry for the optical
afterglow of GRB 120212A (Guidorzi et al.; GCN 12932) using HOWPol attached
to the 1.5-m Kanata telescope at Higashi-Hiroshima Observatory, Japan.
Our first exposure began at t=74 sec since Swift/BAT trigger (Sonbas
et al.; GCN 12930), but the bright twilight sky shaded the afterglow
until t=22 min. Our quick-look analysis indicates that Rc magnitude of
the afterglow was 16.5 at t=23 min and faded to 17.6 at t=58 min.
Further analysis is ongoing.