GCN Circular 6991
Subject
GRB 071025: I-detection, R-dropout?
Date
2007-10-25T05:43:23Z (17 years ago)
From
Myungshin Im at Seoul Nat U <mim@astro.snu.ac.kr>
M. Im, I. Lee (Seoul National University), and Y. Urata
(Saitama University) on behalf of the EAFON team:
Using the Mt. Lemmon (Arizona, US) 1.0m telescope
operated by the Korea Astronomy Space Science Institute,
we observed GRB071025, beginning at 04:35 UT on Oct 25.
We have a clear detection of the afterglow in 300 secs frame
taken in I-band (GCN6987, Rykoff et al.),
but no detection at all in B, V, R-band with the same exposure
time. The non-detection R-band suggests that the GRB is
likely a R-band dropout at z ~ 6.
This message may be cited.
We acknowldege the help of the LOAO operators, J.H. Yoon,
for this observation.