GCN Circular 13132
Subject
GRB 120327A: TAROT La Silla observatory optical decay
Event
Date
2012-03-27T07:04:56Z (14 years ago)
From
Alain Klotz at CESR-CNRS <Alain.Klotz@free.fr>
Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR),
Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report:
We continue observations of GRB 120327A (trigger 518731)
with the TAROT robotic telescope (D=25cm) located at the
European Southern Observatory, La Silla observatory, Chile.
An optical decay alpha=1.3 (+/- 0.3) is deduced from the
following observations:
No filter:
start end Rmag dmag filter
(sec) (sec)
1944.2 2234.6 16.96 0.17 CR
2387.2 3159.2 17.31 0.19 CR
3169.5 3938.0 17.81 0.09 CR
4156.0 4916.2 18.03 0.17 CR
4926.5 6102.7 18.84 0.13 CR
R filter:
start end Rmag dmag filter
(sec) (sec)
2767.6 3539.5 17.65 0.09 R
3948.0 4716.3 18.34 0.32 R
5116.5 7072.8 18.56 0.17 R
7472.9 10018.6 18.84 0.09 R
Photometry is relative to the star NOMAD1 0605-0398765:
(ra,dec) J2000 = (246.8438328,-29.4187269) R=14.930.
Magnitudes are not corrected for galactic dust extinction.
This message may be cited.