2020/10/16(Fri) 11:00 -12:00 七樓研討室 7F, P7A Seminar Room
Title
Supermassive Black Holes - Direct Collapse Scenario from Self-interacting Dark Matter
Speaker
馮維祥先生 (加州大學河濱分校物理與天文學系) Mr. Wei-Xiang Feng (Department of Physics and Astronomy, University of California, Riverside)Abstract
Observations of high-redshift quasars indicate that super massive black holes (SMBHs) with a mass of about one billion solar masses exist at high redshifts z >= 6 − 7, when the universe was 6% of its current age. The origin of these SMBHs is not well known. We propose a mechanism, based on the idea of gravothermal collapse of self-interacting dark matter (SIDM) halos, to produce heavy seed black holes in the early universe.
Language
演講語言 (Language): in English