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The Gamma-ray Transients Monitor On Board Formosat 8B

Presentation #327.01 in the session “Gamma Ray Bursts II”.

Published onJun 18, 2021
The Gamma-ray Transients Monitor On Board Formosat 8B

The Gamma-ray Transients Monitor (GTM) is a secondary payload on board Formosat 8B (FS-8B), a Taiwanese remote-sensing satellite scheduled to launch in 2024. The goal of GTM is to monitor Gamma Ray Bursts (GRBs) and other bright gamma-ray transients in the energy range from 15 keV to 2 MeV. GTM consists of two identical modules located on two opposite sides of FS-8B. Each module has four sensor units facing different directions to cover half of the sky. The two modules will then cover the whole sky, including the direction occulted by the Earth. Each sensor unit is composed of a GAGG scintillator array (51 mm x 51 mm x 8 mm) to be readout by SiPM with 16 channels. GTM is expected to detect about 40 GRBs per year. GTM will also be able to perform polarization measurement for very bright events.


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