[vsnet-grb-info 10390] GRB / X-ray transient 110328A: MITSuME OkayamaOptical upper limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  11828
SUBJECT: GRB /  X-ray transient 110328A: MITSuME OkayamaOptical upper limits
DATE:    11/03/29 01:34:43 GMT
FROM:    Daisuke Kuroda at OAO/NAOJ  <dikuroda at oao.nao.ac.jp>

D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ),
S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto)
and N. Kawai(Tokyo Tech)
report on behalf of the MITSuME collaboration:

We observed the field of GRB / X-ray transient 110328A
(Cummings et al., GCN 11823) with the optical three color
(g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope
of Okayama Astrophysical Observatory.

The observation started on 2011-03-28 13:21:15 UT (~24 min
after the burst). We did not find any new point source within the
XRT circle (Cummings et al., GCNC 11823) in all the three bands.

Three sigma upper limits of the OT are listed below. We used
GSC2.3 catalog for flux calibration.


T0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic
------------------------------------------------------
0.04784    14:06:38    4740.0    >19.5  >19.7  >19.0
0.11100    15:37:35    4740.0    >20.4  >20.2  >19.6
0.24717    18:53:40    4440.0    >20.7  >20.4  >19.7
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]