 GTM master and slave modules after assembly process. | |
| Mission type | Gamma-ray astronomy |
|---|---|
| Operator | TASA |
| Website | https://crab0.astr.nthu.edu.tw/# |
| Spacecraft properties | |
| Bus | Formosat-8B |
| Manufacturer | TASA |
| Payload mass | 1.9 kg |
| Power | 2 Watts |
| Orbital parameters | |
| Altitude | 561 km |
| Inclination | 97 deg. |
| Main | |
| Name | Gamma-ray Transients Monitor |
| Type | GAGG Semiconductor |
| Collecting area | all-sky |
| Wavelengths | 50 keV to 2 MeV |
 GTM logo | |
Gamma-ray Transients Monitor(GTM) is the first space astronomical telescope of Taiwan. It is a secondary payload on board Formosat-8B (FS-8B), which is a remote-sensing satellite developed by TASA.[1]
The goal of GTM is to track Gamma Ray Bursts (GRBs) and other bright gamma-ray transients with energies ranging from 50 keV to 2 MeV. GTM is made up of two identical modules on opposite sides of the FS-8B. Each module has four sensor units facing different directions, covering half of the sky. The two modules will then cover the entire sky, including the direction obscured by the Earth. The sensor units consist of a Gadolinium Aluminum Gallium Garnet (GAGG) (a semiconductor) scintillator array (50 mm x 50 mm x 8 mm) that is readout by SiPM with 16 pixel channels. GTM is expected to detect approximately 50 GRBs per year. It is expected to launch in 2026.[2]
It is a collaboration between National Tsing Hua University, Academia Sinica and TASA.[1] The repository that stores the code for Science Data Center (SDC) of Gamma-ray Transients Monitor is on GitHub.[3]
- ^ "Gamma-ray Transients Monitor". GTM. Retrieved 2024-07-23.
{{cite web}}: CS1 maint: url-status (link) - ^ Chang, Hsiang-Kuang; Lin, Chi-Hsun; Tsao, Che-Chih; Chu, Che-Yen; Yang, Shun-Chia; Huang, Chien-You; Wang, Chao-Hsi; Su, Tze-Hsiang; Chung, Yun-Hsin; Chang, Yung-Wei; Gong, Zi-Jun; Hsiang, Jr-Yue; Lai, Keng-Li; Lin, Tsu-Hsuan; Lu, Chia-Yu (2022-01-15). "The Gamma-ray Transients Monitor (GTM) on board Formosat-8B and its GRB detection efficiency". Advances in Space Research. 69 (2): 1249–1255. doi:10.1016/j.asr.2021.10.044. ISSN 0273-1177.
- ^ Huang, Chien-You Jason (2023-10-18), PbU-Jason/GTM_SDC, retrieved 2024-07-27