Dr. Zhen-Yi CAI （蔡振翼，Zin-Iak CUA）

Our Group & Collaborations

I am part of the big USTC-AGN group, closely collaborate with Prof. Jun-Xian Wang (USTC) on AGN variability and Prof. Gianfranco De Zotti (INAF/Padova) on Galaxy Formation, and more, such as Profs. Yong-Quan Xue (USTC), Wei-Min Gu (XMU), Mou-Yuan Sun (XMU), and Shan-Shan Weng (NJNU) in AGNs/BHXRBs, and Xu Kong (USTC), Guan-Wen Fang (AQNU), and Andrea Lapi (SISSA/Trieste) in Galaxies.

My major interests and Representative works

• • Galaxy Formation and Evolution: a semi-analytical model

 

• ◦ Interpreting the statistical properties of high-z extragalactic sources detected by the South Pole Telescope survey (Cai, Z.-Y.; Negrello, M.; De Zotti, G., 2022, ApJ, 932, 13) 
• ◦ High-z dusty star-forming galaxies: A top-heavy initial mass function? (Cai, Z.-Y.; de Zotti, G. & Bonato, M., 2020, ApJ, 891, 74)
• ◦ A physical model for the evolving ultraviolet luminosity function of high redshift galaxies and their contribution to the cosmic reionization (Cai, Z.-Y.; Lapi, A.; Bressan, A.; et al., 2014, ApJ, 785, 65)
• ◦ A hybrid model for the evolution of galaxies and active galactic nuclei in the infrared (Cai, Z.-Y.; Lapi, A.; Xia, J.-Q.; et al., 2013, ApJ, 768, 21)

 

• • Cosmic H/He Re-ionization: the relative role of galaxies and AGNs

• • AGN Variability: modeling + analysing

• ◦ EUCLIA. II. On the puzzling large UV to X-ray lags in Seyfert galaxies (Cai, Z.-Y.; Wang, J.-X. & Sun, M.-Y., 2020, ApJ, 892, 63)
• ◦ EUCLIA--Exploring the Uv/optical Continuum Lag In Active galactic nuclei. I. A model without light echoing (Cai, Z.-Y.; Wang, J.-X.; Zhu, F.-F.; et al., 2018, ApJ, 855, 117)
• ◦ Simulating the timescale dependent color variation in quasars with a revised inhomogeneous disk model (Cai, Z.-Y.; Wang, J.-X.; Gu, W.-M.; et al., 2016, ApJ, 826, 7)

• • AGN UV SED
• • WFST pipeline: developing

Students

• • PhD
• ◦ Dr. Mr. Fei-Fan Zhu (2015-2019, co-supervised with Prof. Jun-Xian Wang)
• • MS
• ◦ Mr. Jie Li (2022-)
• ◦ Mr. Zhen-Bo Su (2021-)
• • BS
• ◦ Mr. Jia-Ming Zhu-Ge & Wen-He Lv (2022-, 大创)
• ◦ Mr. Xu-Fan Hu (2021-, 大创)
• ◦ Mr. Zhen-Bo Su (2020-2021, 毕设, co-supervised with Prof. Yang Huang from YNU)
• ◦ Mr. Hao Zhai (2020-2021, 毕设, co-supervised with Prof. Jun-Xian Wang)