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The Age of Discovery with the James Webb Space Telescope
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主讲人: Kohei Inayoshi (永利集团)
地点: KIAA-Auditorium
时间: 2024年9月19日(星期四)15:30—16:30
主持 联系人: Kohei Inayoshi(inayoshi0328@gmail.com)
主讲人简介: Dr. Inayoshi is an associate professor in Kavli Institute for Astronomy and Astrophysics, Peking University. Before joining KIAA in the fall of 2018, Dr. Inayoshi spent 4 years at Columbia University in US as a Junior Simons Fellow. He received his Ph.D. in physics from Kyoto University, Japan, in 2014.

报告摘要:The James Webb Space Telescope (JWST) observations have revolutionized extragalactic research, particularly with the discovery of low-luminosity active galactic nuclei (AGNs) at high redshifts, powered by accreting black holes (BHs) with masses of 10^6-8 Msun. These AGN populations are crucial for understanding early BH assembly and coevolution with their host galaxies. Several remarkable findings distinguish these JWST-identified AGNs from their low-redshift counterparts: (1) their abundance is 1-2 orders of magnitude higher than that of bright quasars, (2) the BH-to-galaxy mass ratio appears significantly higher than the local relationship, and (3) strong absorption features are often seen on top of Balmer emission lines. In this talk, I will review these new results from the first-round of JWST observations, explore theoretical explanations and predictions for those aspects, and propose potentially interesting observations to further investigate the early BH population.

主讲人简介:Dr. Inayoshi is an associate professor in Kavli Institute for Astronomy and Astrophysics, Peking University. Before joining KIAA in the fall of 2018, Dr. Inayoshi spent 4 years at Columbia University in US as a Junior Simons Fellow. He received his Ph.D. in physics from Kyoto University, Japan, in 2014.