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FAN Yizhong

FAN Yizhong (1977-), was born in Liangping, Chongqing, China. He received the B.Sc., Master and Ph.D. degrees from Chang’an Univerisity, Nanjing University, and Purple Mountain Observatory in 2000, 2003 and 2006, respectively. He has been working in Purple Mountain Observatory (PMO) of Chinese Academy of Sciences (CAS) as a staff scientist since 2005/10. He was a postdoctoral at Hebrew University of Jerusalem from 2005/11 to 2007/08, at Copenhagen University from 2007/09 to 2009/11, and a visiting scholar at the University of Nevada, Las Vegas from 2009/12 to 2010/03. He has been a research professor of PMO since 2010/04, and has been leading the science team of the Dark Matter Particle Explorer (DAMPE) since 2012/05 and the group of dark matter indirect detection since 2015/11. Dr. Fan has served as the deputy director of PMO since April 2022.

Yi-Zhong Fan’s research fields include dark matter indirect detection, high energy astrophysics, and gravitational wave astronomy. Before 2010 he was focusing on the physics of gamma-ray bursts. Together with his colleagues, Dr. Fan found the first piece of evidence for magnetization in the reverse shock modeling of the optical flash of GRB 990123 (in 2002) and proposed the late internal shock model to account for the X-ray flares in the GRB afterglows (in 2005). In April 2010 Dr. Fan joined the DAMPE collaboration and started to work on dark matter indirect detection. He founded the theoretical group on dark matter indirect detection in PMO and played a key role in expanding the data analysis group of the DAMPE satellite. As one of a few leaders of the DAMPE collaboration, Dr. Fan was responsible for drafting the papers on the DAMPE mission (in 2017), its on-orbit calibration (in 2019) as well as the accurate measurement of the electron and positron cosmic ray spectrum in the energy range of 25GeV-4.6TeV (in 2017). In 2015, Dr. Fan and his team demonstrated that the presence of a statistically significant GeV gamma-ray excess in the inner Galaxy is robust though its spectrum depends on the diffuse galactic gamma-ray emission model adopted in the analysis. They also found strong evidence for a GeV anti-proton excess in the AMS-02 data which can be interpreted as the dark matter annihilation with rather similar parameters of the GeV gamma-ray excess (in 2017). Recently, they demonstrated that the i2HDM model can reasonably account for the W-boson mass excess as well as the GeV gamma-ray excess and anti-proton excess (in 2022). Dr. Fan also has a great interest in gravitational-wave astronomy and astrophysics. In 2013, they pointed out for the first time that within the neutron star central engine model the peculiar X-ray afterglow emission of some short GRBs should point towards the dominated energy loss via gravitational wave radiation and the maximal mass of the non-rotating neutron stars is about 2.3 solar mass. Since 2015, they have successfully identified the macronova/kilonova candidates in GRB 060614, GRB 050709, GRB 160821B, GRB 070809 and GRB 060505, and established the neutron merger origin of the puzzling long bursts such as GRB 060614 and GRB 060505. In 2018 Dr. Fan founded a group to analyze the LIGO/Virgo gravitational wave data and started to reconstruct the equation of state of neutron stars with the multi-messenger information. As for the dark energy, Dr. Fan proposed to address its nature with thousands of cosmological fast radio bursts firstly in 2014. Right now, Dr. Fan is proposing the Very Large Area Gamma-ray Telescope (VLAST), the next generation of the MeV to TeV gamma-ray observatory characterized by an acceptance of about 10 m2 sr and a high energy resolution. Dr. Fan has published >150 refereed papers (most are either the first or the corresponding author) in major astrophysics/physics journals, with >8,000 total citations and H index = 46 (up to 2022/05).