天文與重力中心10/7線上專題演講

03
2021.10
增能研習
天文與重力中心10/7線上專題演講

報名方式: 免費入場
活動網址: 
https://www.cag.ntnu.edu.tw/index.php/seminars-2021-zh/
參加對象: 教職員,學生,校友
聯絡人: 李怡萱
連絡電話: 6035
電子郵件: cheryl@ntnu.edu.tw

 

2021 年秋季隔週四中午定期舉辦專題演講

地點:理學院大樓B101教室(目前因應疫情暫時改為線上活動)

時間:12:20-13:20

請填寫線上演講報名表單以取得會議連結 

 

10/7 張祥光 (Hsiang-Kuang Chang, NTHU Astronomy)

Gamma Ray Bursts (GRBs) and the Gamma-ray Transients Monitor (GTM) project

Abstract:
Gamma Ray Bursts (GRBs) were discovered more than half a century ago. Their nature remained highly mysterious since then until the detection of their multi-wavelength afterglows and host galaxies in late 90’s, which eventually allowed to measure the redshift of GRBs and to establish their cosmological distance scale. These advances were based on extensive efforts of GRB monitoring and follow-up observations. The Gamma-ray Transients Monitor (GTM), whose main goal is to monitor GBRs in the energy band from 50 keV to 2 MeV, is a secondary payload on board Formosat-8B (FS-8B), a Taiwanese remote-sensing satellite scheduled to launch in 2024. 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 (50 mm × 50 mm × 8 mm) to be readout by SiPM with 16 pixel-channels. GTM is expected to detect about 40 GRBs per year.