[vsnet-grb-info 13579] GRB 130610A: TAROT La Silla observatory optical observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Sun Jun 16 18:32:59 JST 2013
TITLE: GCN CIRCULAR
NUMBER: 14908
SUBJECT: GRB 130610A: TAROT La Silla observatory optical observations
DATE: 13/06/16 09:32:51 GMT
FROM: Alain Klotz at IRAP-CNRS-OMP <Alain.Klotz at free.fr>
Klotz A. (IRAP-CNRS-OMP), Gendre B. (IRAP-CNRS-OMP),
Boer M., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA),
Atteia J.L. (IRAP-CNRS-OMP) report:
We imaged the field of GRB 130610A detected by SWIFT
(trigger 557845) with the TAROT robotic telescope (D=25cm)
located at the European Southern Observatory,
La Silla observatory, Chile.
The observations started 91s after the GRB trigger
(17s after the notice). The elevation of the field
decreased from 31 degrees above horizon and weather conditions
were good.
The first image is trailed with a duration of 60.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We recorded the rise of the afterglow discovered by
Melandri et al. (GCNC 14843).
We used the star NOMAD1 1182-0257977 R.A.=224.3892908
DEC=+28.2065917 R=14.11 to extract the light curve
of the rise of the afterglow:
start end Rmag
(sec) (sec)
91 97 > 17.8
97 103 > 17.8
103 109 > 17.8
109 115 > 17.8
115 121 > 17.8
121 127 17.7
127 133 16.9
133 139 16.5
139 145 16.6
145 151 16.1
Magnitudes are not corrected for galactic dust extinction.
After the trailed image a technical problem prevented
to obtain next images.
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