[vsnet-grb-info 20485] GRB 180402A: LCO McDonald observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Mon Apr 2 21:26:21 JST 2018
TITLE: GCN CIRCULAR
NUMBER: 22581
SUBJECT: GRB 180402A: LCO McDonald observations
DATE: 18/04/02 12:25:42 GMT
FROM: Cristiano Guidorzi at Ferrara U,Italy <guidorzi at fe.infn.it>
C. Guidorzi, R. Martone (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell
(U. Bath), A. Gomboc (U. Nova Gorica), I.A. Steele (LJMU) on behalf of a
large collaboration report:
The LCO 1-m unit at McDonald Observatory (Texas) began observing Swift
possibly short GRB 180402A (Lien et al. GCN 22580) on April 2, 10:02 UT
(17.3 minutes since the GRB) with the SDSS-I filter. Within the XRT
error circle we do not detect any uncatalogued optical afterglow down to
i'>19.3 mag (5x120 s exposure, at a mid time of 23.7 min post GRB) as
calibrated against nearby Pan-STARRS objects.
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