2026/02/09(Mon) 14:00 -15:00 五樓第一會議室 5F, 1st Meeting Room
Title
Supermassive Black Holes in the First Billion Years — Self-Interacting Dark Halo Core Collapse v.s. Primordial Black Hole Clustering
Speaker
馮維祥博士 (Shuimu Tsinghua Fellow, Department of Physics, Tsinghua University) Dr. Wei-Xiang Feng (Shuimu Tsinghua Fellow, Department of Physics, Tsinghua University)Abstract
The James Webb Space Telescope (JWST) has identified a class of compact galaxies at high redshift(4≲z≲8), dubbed “little red dots” (LRDs). The supermassive black holes (SMBHs) in LRDs, with masses 10^5−10^8 M⊙, favor a heavy-seed origin. I will discuss two possible scenarios—both connected to the nature of dark matter—that could explain their origin: the gravothermal core collapse of self-interacting dark matter (SIDM) halos, and small-scale primordial black hole (PBH) clustering. Both scenarios can account for SMBH formation, but their associated gravitational-wave signatures are distinct and can be distinguished by future detectors such as LISA and the Einstein Telescope.
Language
演講語言 (Language): in English