[vsnet-grb-info 11571] GRB120219A: TNT optical afterglow candidates
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Mon Feb 20 02:28:27 JST 2012
TITLE: GCN CIRCULAR
NUMBER: 12966
SUBJECT: GRB120219A: TNT optical afterglow candidates
DATE: 12/02/19 17:28:20 GMT
FROM: L.P. Xin at NAOC <xlp at bao.ac.cn>
L.P. Xin, M. Zhai , J. Y.Wei, Y.L. Qiu,J. Wang, J.S. Deng,
C. Wu, X. H. Han on behalf of EAFON report:
We began to observe GRB120219A (Swenso et al. GCN 12964 )
with Xinglong TNT telescope at 14:32:15 (UT), 127 sec after
the burst. A serveral white and R-band were obtained.
After combining 11*300s R-band images, a new marginal source was
found within the errorbox of X-ray counterpart ( Swenso et al. GCN 12964).
Its coordinates ( RA and Dec ) are 08:39:09.55 51:01:56.5 (J2000)
with an uncertainty of about 1 arcsecond.
The brightness of the source is estimated to be about
21.5 +/- 0.3 mag relatively to USNO B1.0 R2 mag
at the mean time of 37 min after the burst.
Further observations and confirmation are encouraged.
This message may be cited.
For more information about Xinglong GRBs Follow-up
observations, please visit the website:
http://www.xinglong-naoc.org/grb/
We thank ChunLan Lu for performing these observations.
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