Title: Multi-Wavelength Probes on Dark Matter Beyond WIMPs

Speaker：Kenji Kadota (HIAS-UCAS)

Time：2:00 pm Nov. 22th (Wednesday)

Location:Middle Conference Room, 3rd floor

Tencent Meeting：576-157-8290 password: 6360

Report in English

Abstract：

We will explore alternative dark matter candidates that go beyond conventional WIMPs (weakly interacting massive particles). Specifically, we will discuss two promising dark matter scenarios: axion-like particle dark matter and primordial black hole dark matter.

We begin with radio telescope probes on axion-like dark matter. We will discuss the axion-photon conversion around neutron stars which results in the radio emission and the 21 cm probes through the effects on large scale structure formation suppression.

We then turn our attention to primordial black hole dark matter. We will explore multi-messenger approaches to investigate the dark matter environments surrounding black holes. The constraints to be discussed include radio signals, CMB, gamma rays, and gravitational waves. The complementarity of these observational signals will also be highlighted.

CV：

He obtained his PhD from UC Berkeley in 2004. He completed postdoctoral research in the US at Fermilab (Theoretical Astrophysics Group), the University of Minnesota (Particle Theory Group), and the University of Michigan (Particle Theory Phenomenology Group). Subsequently, he served as a Research Assistant Professor at Nagoya University in Japan and a Faculty Scientist at the Institute for Basic Science in Korea. He is currently an Associate Professor at the Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences (HIAS-UCAS). His research focuses on particle cosmology, and he has published more than 50 papers in leading international journals, including the Astrophysical Journal Letters.