中国科学院云南天文台学术报告通知

2024年第23期

报告题目：Unveiling accretion flows around our galaxy's supermassive black hole

报告人：Dr. Indu Kalpa Dihingia

报告人单位：上海交通大学李政道研究所 (Tsung-Dao Lee Institute, Shanghai Jiao Tong University)

报告语言：English

报告时间：2024年9月9日 10:00-11:30

报告地点：1号楼222会议室

报告摘要：

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There are ample ambiguities in the theoretical modeling of accretion flow around Sgr A*. The theory and observations cannot confirm the nature of the accretion flow around the central supermassive black hole. In this talk, we investigate the possible application of low-angular momentum flow for the same. We focus on the role of angular momentum in determining the properties of accretion flows around Kerr black holes. Utilizing numerical simulations employing general relativistic magnetohydrodynamics (GRMHD), we explore how different angular momentum profiles influence the flow dynamics. Finally, we propose that intermediate angular momentum flows offer some insights into the complexities observed in the supermassive black hole Sgr A*, which requires more study. We also discuss other accretion possibilities around Sgr A* and compare them together.

云台邀请团组：星系类星体研究团组

邀请方联系人：毛基荣