【直播】【上海天文台天体物理学术报告】Prof. Jim Fuller（Caltech）
活动名称：
Drama Preceding the Deaths of Massive Stars
活动时间：
Prof. Jim Fuller（Caltech）
报告嘉宾：
2022年9月22日 (周四) 10:00
主办单位：
中科院上海天文台
直播通道
蔻享学术直播间 |
报告人介绍
Prof. Jim Fuller（Caltech）
2017-current, Assistant Professor, California Institute of Technology
2013-2017, DuBridge Fellow, California Institute of Technology
2013-2017, KITP Fellow, Kavli Institute for Theoretical Physics
2014, Ph.D., Corell University
报告简介
A renaissance in the astrophysics of massive stars is currently underway, driven by asteroseismology, supernovae, and gravitational wave observations. Asteroseismology of low-mass red giant stars measures the core rotation rates, informing new angular momentum transport models involving magnetic torques. Updated models based on the magnetic Tayler instability predict mostly slow rotation rates for white dwarfs, neutron stars, and black holes. An exception occurs for helium stars tidally spun up in binaries, allowing for highly spinning black holes and neutron stars. In the late phase evolution of massive stars approaching core-collapse, vigorous convection excites gravity waves that can carry huge amounts of energy within the star. Wave energy deposition near the surface can drive outbursts, expansion, and enhanced mass loss in the final years of massive star evolution, potentially leading to interaction-powered supernovae such as fast blue optical transients.
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