GCN Circular 2103
Subject
GRB030328: R upper limit after 6 hours by MASTER
Date
2003-04-06T19:24:32Z (22 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc@observ.inetcomm.ru>
V. Lipunov, A. Krylov, V. Kornilov, G. Borisov, A. Belinski,
I. Chilingarian, D. Kuvshinov, M. Kuznetsov, S. Potanin, V. Vitrischak
Sternberg Astronomical Institute, Alexsandr Krylov Observatory, Moscow
report:
We had been observing the OT of GRB030328 (HETE #2650, Peterson and Price,
GCN 1974) from 17:16UT 28/03/2003 (~5h after GRB) to 00:35UT 29/03/2003
(~13h after GRB). Sky conditions were quite poor, because of low position
of the object (25 degrees above the horizont at culmination). We obtained
about 70 one- to 3-minute exposures in R filter. There is no OT on the sum
of exposures for the 1-st hour of observations up to 17.7 R magnitude (3
sigma). There is no OT on the sum of all images up to 18.3 R magnitude (3
sigma).
It agrees with the powerlaw index alpha=-1 (GCN 1977, Peterson and Price).
Summarized images avaliable at:
http://observ.pereplet.ru/images/grb030328_1.gif - 1-st hour sum
http://observ.pereplet.ru/images/grb030328_f.gif - whole sum
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