Draft:Hsiang-Kuang Chang

Hsiang-Kuang Chang (born 1964) is a Taiwanese high energy astrophysicist. . He is currently a senior professor at the Institute of Astronomy, National Tsing Hua University. He is the principal investigator of GTM project. It is the first astronomical telescope of Taiwan.

Biography
Hsiang-Kuang Chang was born in Taipei, Taiwan in 1964. He holds a Bachelor of Science in Physics from the Department of Physics, National Tsing Hua University (NTHU), Hsinchu which he completed in 1987. After that, he completed a Master of Science in Physics, Institute of Physics, National Taiwan University (NTU), Taipei, in 1991. He then moved to Bonn University in Germany to do his PhD under Wolfgang Kundt, which he completed in 1994. He worked as a Postdoctoral Research Associate at Los Alamos National Lab, USA between 1994 and 1996 after which he moved back to National Tsing Hua University.

Career
Hsiang-Kuang Chang became an assistant professor in NTHU in 1997. He held the chairing position in Department of Physics, National Tsing Hua University between 2008 and 2011. He was also the president of the National Committee of Republic of China (ROC) for Committee on Space Research (COSPAR), 2022-2023. He is currently the Vice President for General Affairs at NTHU, a position which he had held before in 2014 - 2015 academic year. One of his most notable work include the Nature paper titled "Ambient acoustic imaging in helioseismology".

He has also studied trans-neptunian objects, by seeing the occultation of X-rays from Scorpius X-1 by them. He was also the Taiwan lead of The Nuclear Compton Telescope (NCT) project, which a balloon-borne telescope designed to study astrophysical sources of gamma-ray emission with high spectral resolution, moderate angular resolution, and novel sensitivity to gamma-ray polarization. It was a collaborative effort between UC Berkley, NTHU and NCT among many others. Later, NASA took up the mission as a SMEX mission. Renamed as The Compton Spectrometer and Imager (COSI) , it is a 0.2–5 MeV Compton telescope capable of imaging, spectroscopy, and polarimetry of astrophysical sources. He was also a part of UltraFast project. It was a multi-fiber fast photometer planned to mount on UT2 (Kueyen) of ESO's Very Large Telescope (VLT) at Cerro Paranal, Chile.

He has various academic interests ranging from Pulsars (PSR), Anomalous X-ray Pulsars (AXP) and Soft Gamma Repeaters (SGR) - magnetar, X-ray binaries (XRB), Gamma Ray Bursts (GRB), Supernova Remnants (SNR) and Cosmic Rays (CR), Galactic 511 keV emission, Active Galactic Nuclei (AGN), Search for white dwarf p-mode oscillation, Trans-Neptunian Objects (TNO), etc.

GTM
Hsiang-Kuang Chang is the PI of the Gamma-ray Transients Monitor (GTM). It is a secondary payload on board board Formosat-8B. It is the first space astronomical telescope of Taiwan. The goal of GTM is to monitor Gamma Ray Bursts (GRBs) and other bright gamma-ray transients in the energy range from 50 keV to 2 MeV. It will be launched by TASA in 2027.