[vsnet-grb-info 19258] GRB 170331A: LCO Sutherland observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Mar 31 17:31:18 JST 2017
TITLE: GCN CIRCULAR
NUMBER: 20949
SUBJECT: GRB 170331A: LCO Sutherland observations
DATE: 17/03/31 08:30:47 GMT
FROM: Cristiano Guidorzi at Ferrara U,Italy <guidorzi at fe.infn.it>
C. Guidorzi (U. Ferrara), S. Kobayashi, I.A. Steele (LJMU), A. Gomboc
(U. Nova Gorica), C.G. Mundell (U. Bath) on behalf of a large
collaboration report:
We observed Swift GRB 170331A (Melandri et al. GCN 20946) on March 31,
03:21 UT (1.7 hours since the GRB) with two 1-m LCO units in Sutherland
(South Africa) with the SDSS i filter. We do not find any object within
the prompt enhanced Swift-XRT error circle (Evans GCN 20948) down to
i>17.5 mag (with an exposure of 2x120s) as calibrated against USNOB-1
nearby stars.
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