30 May 2024 to 2 June 2024
Southeast University (Sipailou Campus)
Asia/Shanghai timezone

Axion star condensation around primordial black holes and microlensing limits

31 May 2024, 17:35
5m
Huifang Hall, Liu Yuan Hotel (榴园宾馆荟芳厅)

Huifang Hall, Liu Yuan Hotel (榴园宾馆荟芳厅)

Speaker

孜文 尹 (上海交通大学物理与天文学院(李政道研究所))

Description

Dark matter is one of the biggest mysteries in physics and astronomy today. While multiple dark matter candidates have been proposed, such as the axion and primordial black holes (PBHs), the interplay between them is not well understood. In this talk, I will focus on the formation of axion minihalos around PBHs and the condensation of axion stars inside them, and reveal distinct morphological characteristics of these structures compared to isolated axion star scenarios. Furthermore, I will explore the implications of these results when applied to gravitational microlensing from extended objects, providing constraints on the fraction of these objects contributing to microlensing events from the EROS-2 survey.

Primary authors

Prof. Luca Visinelli (Shanghai Jiao Tong University) 孜文 尹 (上海交通大学物理与天文学院(李政道研究所))

Presentation materials

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