Louis Changhao Chen
Graduate Student
Peking University
Email: cchen_louis@stu.pku.edu.cn
My name is Changhao Chen (陈昌灏), and I am a fourth-year Ph.D. student studying the formation and evolution of supermassive black holes (SMBHs) and their host galaxies in the early Universe. I publish under the name Chang-Hao Chen, though many friends also call me by my English name, Louis (which, coincidentally, is pronounced the same as my advisor, Prof. Luis C. Ho—please don’t confuse us!).
My research focuses on understanding the intrinsic spectral energy distributions (SEDs) of AGNs, the ways in which host galaxy structures influence the behavior of their central engines, and how the energetic output of AGNs shapes galaxy evolution.
Interests
- Little Red Dots
- AGN SEDs
- Coevolution of galaxy and SMBH
- Panchromatic image analysis
- 2D spectra modeling
Technical Expertise
- Analysis: 2D multi-band image decomposition (GALFIT, GALFITM, GalfitS)
- PSF modeling
- Programming: Python, C
Education
- PhD in Astronomy, 2022-Present
- Peking University
- Advisor: Prof. Luis C. Ho
- BSc in Astronomy, 2022
- University of Science and Technology of China
- Advisor: Prof. Lulu Fan, Prof. Guilin Liu, Prof. Hongyan Zhou
Publications
- Chen, C.-H, Ho, L. C., Li. R., & Inayoshi, K. 2025, ApJL, submitted: The Physical Nature of the Off-centered Extended Emission Associated with the Little Red Dots.
- Chen, C.-H., Ho, L. C., Li. R., & Zhuang, M.-Y. 2025, ApJ, 983, 60: The Host Galaxies (If Any) of the Little Red Dots.
- Sun, W., Ho, L.C., Zhuang, M. -Y., et al. 2024, ApJ, 960, 104: The Structure and Morphology of Galaxies during the Epoch of Reionization Revealed by JWST.