Draft:Hsiang-Kuang Chang
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Hsiang-Kuang Chang | |
|---|---|
| 張祥光 | |
| Born | 1964 (age 61–62) |
| Education | National Tsing Hua University National Taiwan University Bonn University |
| Known for | High-energy astrophysics, neutron stars, Trans-Neptunian Objects, GTM and GPM missions |
| Scientific career | |
| Fields | Astrophysics, Astronomy, Physics |
| Institutions | National Tsing Hua University |
| Wolfgang Kundt | |
Hsiang-Kuang Chang (Chinese: 張祥光; born 1964) is a Taiwanese astrophysicist and academic. He is a Professor in the Institute of Astronomy and the Department of Physics at National Tsing Hua University (NTHU) in Taiwan.[1] He serves as the Senior Vice President of National Tsing Hua University (since 2025).[2] His research primarily focuses on high-energy astrophysics, neutron stars, gamma-ray astronomy, and Trans-Neptunian objects.
Early life and education
[edit]Born in Taipei, Taiwan in 1964, Chang received his Bachelor of Science in Physics from National Tsing Hua University in 1987.[3] He earned a Master of Science in Physics from National Taiwan University in 1991. He subsequently relocated to Germany, where he completed his Doctor of Natural Sciences in Astronomy at Bonn University in 1994, under the supervision of astrophysicist Wolfgang Kundt.[citation needed]
Career
[edit] |
Following his doctoral studies, Chang worked as a Postdoctoral Research Fellow at Los Alamos National Laboratory in the United States.
In August 1997, he joined the faculty of National Tsing Hua University as an Assistant Professor, progressing through the ranks to become a Full Professor of Astronomy and Physics. He has held significant academic roles at the university, including serving simultaneously as the Director of the Institute of Astronomy and the Chair of the Department of Physics from 2008 to 2011.
Chang has served as Associate Vice President for Academic Affairs from 2011 to 2014, and as Vice President for General Affairs during two separate tenures (2014–2015 and 2023–2025). In 2025, he was appointed Senior Vice President of National Tsing Hua University. He also serves as a member of the Academic Executive Committee of the National Center for Theoretical Sciences (NCTS, Physics).
In addition to his university roles, he served as the President of the Astronomical Society of the Republic of China (ASROC) from 2008 to 2011, and as the President of the National Committee of the Republic of China for the Committee on Space Research (COSPAR).
Research and space missions
[edit]Chang's research explores high-energy astrophysics, particularly gamma-ray bursts, pulsars, active galactic nuclei, and the search for Trans-Neptunian Objects (TNOs) using X-ray occultation.
Chang is involved in the development of space-based and balloon-borne astronomical instruments. He is the Principal Investigator for the Gamma-ray Transients Monitor (GTM). GTM is a scientific payload developed by a collaboration including NTHU and Academia Sinica, consisting of GAGG scintillator arrays. It is scheduled to fly on the Taiwan Space Agency's (TASA) Formosat-8B (FS-8B) satellite, with an expected launch in 2026, marking Taiwan's first domestic space astronomy instrument.[4] He is also involved in the development of the Gamma-ray Polarimeter and Monitor (GPM) for the future Formosat-8D satellite.
Nuclear Compton telescope (NCT)
[edit]Chang is a principal investigator for the Taiwanese collaboration in the Nuclear Compton Telescope (NCT) project, a joint effort between Taiwanese institutions and the Space Sciences Laboratory at UC Berkeley. The NCT is a balloon-borne telescope designed to study astrophysical sources of hard X-ray and soft gamma-ray emission in the 0.2–10 MeV range. Chang published pivotal foundational papers on the NCT's scientific goals and expected sensitivity.[5]
Building upon the technological heritage of the NCT balloon campaigns, Chang's team at NTHU's Institute of Astronomy has been participating in the successor mission, the Compton Spectrometer and Imager (COSI), since 2006. COSI is a NASA Small Explorer (SMEX) satellite mission scheduled for launch in 2027. The wide-field gamma-ray telescope will survey the sky to map radioactive elements from nucleosynthesis and investigate the origin of positrons causing electron-positron annihilation emissions.[6]
Selected publications
[edit]- Chang, H.-K., King, S.-K., Liang, J.-S., Wu, P.-S., Lin, L. C.-C., & Chiu, J.-L. (2006). Occultation of X-rays from Scorpius X-1 by Small Trans-Neptunian Objects. Nature, 442, 660-663.[7]
- Chang, H.-K., Boggs, S., & Chang, Y.-H. (2007). The Nuclear Compton Telescope (NCT): Scientific goals and expected sensitivity. Advances in Space Research, 40(8), 1281–1287.
- Chang, H.-K., Liu, C.-Y., & Chen, K.-T. (2013). Search for serendipitous trans-Neptunian object occultation in X-rays. Monthly Notices of the Royal Astronomical Society, 429, 1626.
References
[edit]- ↑ "張祥光教授 - 清華大學物理系". NTHU.
- ↑ "Chang Hsiang-Kuang - Elsevier". Elsevier.
- ↑ "張祥光教授 - 清華大學物理系 (Archive)". NTHU.
- ↑ "福衛八號取像成果首度公開". TASA. 2026-02-10.
- ↑ Chang, Hsiang-Kuang; Boggs, S.; Chang, Yuan-Hann (2007). "The Nuclear Compton Telescope (NCT): Scientific goals and expected sensitivity". Advances in Space Research. 40 (8): 1281–1287.
- ↑ "Compton Spectrometer and Imager (COSI) was selected by NASA's SMEX program". NTHU Institute of Astronomy.
- ↑ Chang, H.-K. (2006). "Occultation of X-rays from Scorpius X-1 by Small Trans-Neptunian Objects". Nature. 442: 660–663.