Search for gamma-ray counterparts of gravitational wave events by CALET
Abstract
We present results of searches for gamma-ray counterparts of the LIGO/VIRGO gravitational-wave events from the CALorimetric Electron Telescope (CALET). The main instrument of CALET, the CALorimeter (CAL), observes gamma-rays from 1 GeV up to 10 TeV with a field of view of 2 sr. The CALET Gamma-ray Burst Monitor (CGBM) views 3 sr in the 7 keV - 1 MeV and the 40 keV - 20 MeV bands using a lanthanum bromide and a bismuth germanate scintillator, respectively. CALET observation on the International Space Station started in October 2015, and here we report analysis of events associated with the gravitational wave event GW151226 and successive events reported by LIGO/VIRGO. We also discuss the CALET sensitivity for detecting high-energy gamma-ray emission associated with future gravitational wave observations.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E2349M