[vsnet-grb-info 16410] GRB 150413A: MAXI/GSC detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17691
SUBJECT: GRB 150413A: MAXI/GSC detection
DATE:    15/04/13 15:09:31 GMT
FROM:    Motoko Suzuki at RIKEN  <motoko at crab.riken.jp>

M. Serino (RIKEN), H. Negoro (Nihon U.), S. Nakahira (JAXA),
S. Ueno, H. Tomida, M. Kimura, M. Ishikawa, Y. E. Nakagawa (JAXA),
T. Mihara, M. Sugizaki, M. Shidatsu, J. Sugimoto, T. Takagi, M. Matsuoka (RIKEN),
N. Kawai, T. Yoshii, Y. Tachibana (Tokyo Tech),
A. Yoshida, T. Sakamoto, Y. Kawakubo, H. Ohtsuki (AGU),
H. Tsunemi, R. Imatani (Osaka U.),
M. Nakajima, T. Namba, M. Fujita, F. Honda, K. Tanaka, T. Masumitsu (Nihon U.),
Y. Ueda, T. Kawamuro, T. Hori (Kyoto U.),
Y. Tsuboi, S. Kanetou (Chuo U.),
M. Yamauchi, D. Itoh (Miyazaki U.),
K. Yamaoka (Nagoya U.),
M. Morii (ISM)
report on behalf of the MAXI team:

At 13:56:30 UT, the MAXI/GSC nova alert system triggered a bright uncatalogued X-ray 
transient source at the position 
(R.A., Dec) = (190.278 deg,  71.742 deg) = (12 41 07, +71 44 31) (J2000).
The position is consistent with that reported by Markwardt et al. (GCN 17688).

The X-ray flux averaged over the scan was 440 +- 40 mCrab
(4-10keV, 1 sigma error).
There was no significant excess flux in the previous transit at UT 12:24
with an upper limit of 20 mCrab.