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Talk Title: Radio Search of Dark Matter
Speaker: Prof. Yin-Zhe Ma (马寅哲)
Position: Full Professor & Head of Astrophysics Division, Department of Physics, Stellenbosch University (South Africa)
Abstract: Dark matter is the dominant matter in the Universe but its nature is still unknown. In recent years, indirect detection search, especially using radio telescopes becomes a main stream of searching for dark matter candidates. In this talk, I will introduce three major scenarios of dark matter widely considered as the dark matter candidates: Axion-Like-Particles (ALP), Axion dark matter and WIMP (Weakly Interactive Massive Particle) and show what mechanism they can manifest and radiate the radio waves that are possibly detectable with mid-frequency radio telescopes. I will then discuss how the current radio telescopes, such as FAST, MeerKAT and SKA can search the DM candidates and put constraints on their physical parameters.
Bio: Professor Yin-Zhe Ma obtained the Ph.D. degree in Astronomy from the University of Cambridge (supervisor: Prof. George Efstathiou FRS). He conducted CITA National Fellowship at the University of British Columbia Canada and a research associate at the University of Manchester, and worked in the University of KwaZulu-Natal during 2015-2023. In 2023, he moved to Stellenbosch University as a full professor and the founding head of astrophysics division in physics department. He is also the Inaugural Chair of Stellenbosch-Groningen Computational Astronomy Program.
His research is on theoretical astrophysics and cosmology. He is currently a core member of the Square Kilometer Array (SKA) Science Working group, the Planck science team, Hydrogen Epoch Reionization Array (HERA), and the CMB Stage-4 experiment and LSST (Vera C. Rubin Observatory). He has published over 150 papers, with total citations exceeding 30000, h-index 50. He holds several South Africa National Research Foundation grants and international grants. He was elected to the Academy of Science of South Africa in 2022. He was awarded the National Science and Technology Forum Researcher Award in 2025.
中文简介：
马寅哲教授在南京大学获得物理学学士学位，在中国科学院理论物理研究所获得硕士学位（导师：蔡荣根院士），并在英国剑桥大学获得了天文学博士学位 (Supervisor: George Efstathiou)。并在加拿大和英国从事博士后研究，之后在南非夸祖鲁纳塔尔大学出任高级讲师、副教授和正教授。2023年出任南非斯坦陵布什大学 (Stellenbosch University) 正教授，Stellenbosch-Groningen联合天文学讲座教授，物理系天体物理分部主任。他的研究在观测和理论宇宙学。他目前是平方公里射电望远镜阵列（SKA），欧洲宇航局Planck卫星团队，中国五百米射电望远镜FAST，美国-南非HERA望远镜和 LSST (Vera C Rubin Observatory)的核心成员，并主持若干国际合作研究项目。他发表了150多篇论文，被引总数超过33000，h-index 为 50。获得过若干南非国家基金会，海外基金会的支持。2022年当选为南非国家科学院院士。2025年获得南非国家科学技术论坛研究员成就奖。
他从2015年起开创和领导了南非和中国的天文合作，被人民网称为“连接中国与南非天文学的桥梁”。曾担任中国科学院紫金山天文台兼职研究员(2017-2021)，国家天文台兼职研究员(2019-2021，2025-今)。 2018年获得国家自然科学基金委海外学者合作基金。