GCN Circular 2080
Subject
GRB030329: optical observations at Tokyo Tech
Date
2003-04-03T11:56:51Z (21 years ago)
From
Nobuyuki Kawai at Tokyo Tech <nkawai@hp.phys.titech.ac.jp>
R. Sato, Y. Yatsu, M. Suzuki, and N. Kawai (Tokyo Tech) report:
We have observed the afterglow (Peterson and Price GCN 1985, Torii GCN
1986) of GRB030229 (H2652, Vanderspek et al. GCN 1997) on the nights
of 2003 Apr 29, 30, and 31 at Tokyo Tech, Tokyo, Japan, using a 30 cm
SC telescope with unfiltered AP 6E CCD camera. The observationl
started at 12:57 UT (80 min after the GRB trigger).
We have estimated the R magnitude using USNO 2.0 stars U1050_06349885
(R=13.2), B:U1050_06348771 (R=14.2), and C:U1050_06351075 (R=14.0).
The results are shown in the table below. The dip and rebrightening
at t0+1.2d (Lipkin et al. GCN 2045) was detected in our data too.
t-t0 (days) R mag err
0.0620 12.552 0.023
0.1484 13.370 0.029
0.1943 13.604 0.034
0.2373 13.799 0.043
0.2970 14.145 0.074
0.9457 15.987 0.127
1.0151 16.167 0.081
1.0936 16.504 0.125
1.2172 16.316 0.140
2.0050 17.087 0.212
2.1238 17.148 0.207
The images on the first night and our light curve can be found at
http://www.hp.phys.titech.ac.jp/nkawai/030329/index_e.html.
This message may be cited.