[vsnet-grb-info 17066] GRB 151001A: NOT imaging
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Oct 2 18:10:36 JST 2015
TITLE: GCN CIRCULAR
NUMBER: 18379
SUBJECT: GRB 151001A: NOT imaging
DATE: 15/10/02 09:07:50 GMT
FROM: Thomas Kruehler at MPE Garching <kruehler at mpe.mpg.de>
T. Kruehler (MPE), J. P. U. Fynbo, D. Malesani (DARK/NBI), and P.
Jakobsson (U. Iceland) report on behalf of a larger collaboration:
We observed the field of GRB 151001A (Swift trigger 657286, Stamatikos
et al., GCN Circ. 18373) with the 2.5-m Nordic Optical Telescope (NOT)
equipped with ALFOSC on the evening of 01-Oct-2015 between 19:55-20:24
UT (5 hr after the burst). In SDSS filters r and g we clearly detect the
optical afterglow of GRB 151001A at the position given by UVOT
(Stamatikos et al., GCN Circ. 18373). We derive AB magnitudes of
g = 22.18 +/- 0.05
r = 21.51 +/- 0.08
calibrated against SDSS field stars. The g-r color of the afterglow is
relatively red compared to typical afterglows.
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