题目：Searching for Axion dark matter with astronomical observation

　　报告人：唐天鹏（紫台研究生）

　　摘要：Among various dark matter candidates, the Weakly Interacting Massive Particles(WIMP) have been intensively studied. However, the null results of searching for WIMPs exclude most of its parameter space. Therefore, new different candidates are clearly needed. As a well-motivated dark matter candidate, axions can be detected through the axion-photon resonant conversion in the magnetospheres of magnetic white dwarf stars or neutron stars. In this work, we utilize Omega Centauri, which is the largest globular cluster in the Milky Way and is suggested to be the remnant core of a dwarf galaxy, to probe the axion dark matter through radio signals that originate from all the neutron stars and magnetic white dwarf stars in it. With 100 hours of observation, the combination of SKA phase 1 and LOFAR can effectively probe the parameter space of the axion-photon coupling g_{aγ} up to 10^{-14}~10^{-15} GeV^{-1} for the axion mass range of 0.1~30 μeV.

　　时间：2021年11月23日星期二12:00

　　DOI: 10.1103/PhysRevD.104.103015

　　地点：紫台3-302

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