Y.Terada (RIKEN), K.Yamaoka, S.Sugita (Aoyama Gakuin U.),
M.Ohno, T.Takahashi, Y.Fukazawa (Hiroshima U.),
K.Abe, Y.Endo, S. Hong, K.Onda, M.Tashiro (Saitama U.),
G.Sato, K.Nakazawa, T.Takahashi (ISAS/JAXA), R.Miyawaki,
M.Kokubun, K.Makishima (Univ. of Tokyo) and the HXD-II team
The bright and long burst, GRB 060117 (Swift-BAT trigger
#177666; Campana et al., GCN 4533), triggered the Suzaku
Wide-band All-sky Monitor (WAM) which is sensitive to an
energy band of 50 keV - 5 MeV at 06:50:00 (UT).
The observed light curve shows multi-peak structures
with a duration (T90) of 16 seconds.
The fluence in 100 - 1000 keV was (1.5 +/- 0.1)X10^-5 erg/cm2.
The 1-s peak flux was 9.2 +/- 0.4 photons/cm2/s
in the same energy range.
Preliminary result shows that the time-averaged spectrum
is well fitted by a single power law with a photon index
of 2.5 +/- 0.2.
All the quoted errors are at statistical 90% confidence level.
The WAM in-flight calibration is still under way, and systematic
errors, such as the flux calibration uncertainties of about 20%,
are not included in the errors.
The WAM light curve of this event is available at
Further detailed analysis and the refinement are in progress.