GCN Circular 11258
Subject
GRB100901A: IAO optical upper limits at 4 days after the burst
Date
2010-09-08T18:36:26Z (14 years ago)
From
Daisuke Kuroda at OAO/NAOJ <dikuroda@oao.nao.ac.jp>
D. Kuroda (OAO, NAOJ), H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ),
K. Yanagisawa (OAO, 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 100901A (Immler et al., GCN 11159)
with the optical three color (g', Rc and Ic) CCD camera attached
to the Murikabushi 1m telescope of Ishigakijima Astronomical
Observatory.
The observation started on 2010-09-05 19:53:16 UT (~4.3 day after the
burst). We did not detect the previously reported afterglow (Immler
et al., GCN 11159 and many follow-up observations) in all the three
bands.
Three sigma upper limits of the OT are listed below.
We used SDSS catalog for flux calibration.
T0+[day] MID-UT T-EXP[sec] g' Rc Ic
------------------------------------------------------
4.26159 19:50:52 1080.0 >21.6 >21.3 >19.8
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T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]