CALET Gamma-ray Burst Monitor (CGBM)

About CGBM

CALorimetric Electron Telescope (CALET) is a new space observatory for high energy electrons and gamma-rays at the International Space Station (ISS). CALET will observe the electrons and the gamma-rays at GeV and TeV range.

CALET was successfully launched on August 19, 2015 from Tanegashima Space Center by the H-IIB rocket. On August 25, CALET was attached to the Japanese Exposed Module (JEM) port #9 of the ISS. CALET is in a normal operaton since December 2015.

CALET Gamma-ray Burst Monitor (CGBM) is the Gamma-Ray Burst (GRB) instrument on board CALET. The AGU Yoshida-lab plays a major rule as the PI institute for the development, and currently, the operation of CGBM.

CGBM flight alert notice will be avaiable to the public in real-time through GCN. The notice include the infromation about the trigger time, trigger significance, triggered background/foreground duration, triggered energy band, triggered detectors, boresight RA and Dec, and the ISS longitude and latitude. We also make the light curve data (between -50 sec before the trigger time and 300 sec after the trigger time) available.

The CGBM data used in this product are provided by the Waseda CALET Operation Center located at the Waseda University.