GCN Circular 2091
Subject
GRB030329: final R-band light curve by MASTER
Date
2003-04-04T13:41:38Z (22 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc@observ.inetcomm.ru>
V. Lipunov, A. Krylov, V. Kornilov, G. Borisov, D. Kuvshinov, A. Belinski,
I. Chilingarian, M. Kuznetsov, S. Potanin, V. Vitrischak, G. Antipov
Sternberg Astronomical Institute, Alexsandr Krylov Observatory, Moscow
report:
The OT of GRB030329 (Peterson and Price, GCN 1985) was observed by MASTER
system (Lipunov et al., GCN 2002, GCN 2035). Here we represent pre-final
light curve of the OT. We used more than 200 direct images to obtain field
photometry. Several groups of images were summarized to achieve better
S/N ratio and smaller uncertanities of measurements. As the final result, we
represent 64 points. Magnitude calibration was made according to the data,
presented in GCN 2023 (A. Henden). 4 stars were used to do the calibration.
Big uncertanities of magnitude measurements are caused by weather
conditions. First points were made just after sunset on the blue sky, last
points were made through cirruses near the horizont.
From these data we obtained new power law flux decreasing during
8 hours of observations (t-t0 from 5.2h to 13.5h):
F ~ t^(-alpha), alpha=1.22+-0.03
Rmag = 15.8 + 1.2*2.5*log(age in days)
New light curve plots available at old locations:
http://observ.pereplet.ru/images/GRB030329_R_lc.gif
http://www.sai.msu.su/~chil/GRB030329_R_lc.ps
date UT t-t0,hrs R errR
03/29/2003 16:51:49 5.24691 13.744 0.417
03/29/2003 16:54:27 5.29080 13.934 0.409
03/29/2003 17:02:12 5.41997 13.702 0.226
03/29/2003 17:07:36 5.50997 14.012 0.211
03/29/2003 17:12:04 5.58441 13.708 0.164
03/29/2003 17:14:29 5.62469 13.854 0.151
03/29/2003 17:19:18 5.70497 13.983 0.097
03/29/2003 17:34:11 5.95302 14.118 0.172
03/29/2003 17:36:19 5.98858 13.908 0.103
03/29/2003 17:40:01 6.05024 13.972 0.101
03/29/2003 17:42:44 6.09552 14.043 0.079
03/29/2003 17:46:24 6.15663 14.004 0.081
03/29/2003 17:49:09 6.20247 14.007 0.078
03/29/2003 17:52:18 6.25497 13.971 0.083
03/29/2003 17:55:22 6.30608 13.943 0.073
03/29/2003 17:59:49 6.38024 14.092 0.085
03/29/2003 18:11:56 6.58219 14.007 0.125
03/29/2003 18:21:10 6.73608 14.126 0.111
03/29/2003 18:40:45 7.06247 14.180 0.083
03/29/2003 18:43:29 7.10802 14.145 0.085
03/29/2003 18:46:06 7.15163 14.090 0.083
03/29/2003 18:48:46 7.19608 14.169 0.085
03/29/2003 18:51:23 7.23969 14.147 0.087
03/29/2003 18:54:06 7.28497 14.128 0.085
03/29/2003 18:56:48 7.32997 14.254 0.088
03/29/2003 18:59:29 7.37469 14.175 0.084
03/29/2003 19:02:06 7.41830 14.231 0.089
03/29/2003 19:04:48 7.46330 14.141 0.080
03/29/2003 19:07:29 7.50802 14.325 0.098
03/29/2003 19:12:54 7.59830 14.216 0.101
03/29/2003 19:15:32 7.64219 14.261 0.098
03/29/2003 19:18:10 7.68608 14.070 0.088
03/29/2003 19:21:27 7.74080 14.168 0.121
03/29/2003 19:52:30 8.25830 14.395 0.108
03/29/2003 19:55:12 8.30330 14.375 0.105
03/29/2003 19:58:05 8.35136 14.450 0.101
03/29/2003 20:00:50 8.39719 14.431 0.110
03/29/2003 20:03:42 8.44497 14.336 0.094
03/29/2003 20:08:30 8.52497 14.499 0.097
03/29/2003 20:11:15 8.57080 14.318 0.100
03/29/2003 20:14:05 8.61802 14.463 0.100
03/29/2003 20:16:50 8.66386 14.324 0.093
03/29/2003 20:19:28 8.70774 14.432 0.099
03/29/2003 20:24:45 8.79580 14.440 0.061
03/29/2003 20:36:35 8.99302 14.541 0.075
03/29/2003 20:41:20 9.07219 14.515 0.075
03/29/2003 20:45:58 9.14941 14.437 0.074
03/29/2003 20:51:17 9.23802 14.514 0.080
03/29/2003 20:56:44 9.32886 14.644 0.092
03/29/2003 21:01:30 9.40830 14.578 0.092
03/29/2003 21:07:22 9.50608 14.458 0.087
03/29/2003 21:17:37 9.67691 14.557 0.079
03/29/2003 21:28:18 9.85497 14.604 0.079
03/29/2003 21:39:07 10.03524 14.740 0.078
03/29/2003 21:49:59 10.21636 14.616 0.065
03/29/2003 22:03:48 10.44663 14.698 0.070
03/29/2003 22:16:04 10.65108 14.493 0.068
03/29/2003 22:26:44 10.82886 14.719 0.080
03/29/2003 22:41:42 11.07830 14.632 0.089
03/29/2003 23:03:55 11.44858 14.854 0.113
03/29/2003 23:35:46 11.97941 14.905 0.117
03/30/2003 00:04:04 12.45108 14.859 0.090
03/30/2003 00:23:25 12.77358 14.837 0.129
03/30/2003 00:52:04 13.25108 15.064 0.162
03/30/2003 01:12:16 13.58774 15.002 0.161
03/30/2003 01:35:52 13.98108 15.594 0.413
We thank Sergey M. Bodrov (general director of optical company "Ochkarik")
for financial and equipment support of MASTER research project.
This message may be cited.