Dark Matter Detection from a Multi-Messenger Perspective

by Prof. Hong-Bo Jin（洪金波） (the National Astronomical Observatories of the Chinese Academy of Sciences)

Thursday 5 Nov 2026, 11:00 → 12:00 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee Institute)

Abstract:

As fundamental electromagnetic interactions, radio waves, X-rays, and gamma rays serve as crucial messengers for observing cosmic objects, underpinning most current astrophysical research. The detection of high-energy cosmic rays—including neutrinos—involves not only electromagnetic processes but also weak and strong interactions. Excess positrons from cosmic rays provide evidence supporting dark matter theories, suggesting it might consist of weakly interacting massive particles (WIMPs). The concept of dark matter first emerged from anomalies in galaxy rotation curves observed through visible light. The 2016 LIGO detection revolutionized astrophysics, establishing gravitational waves as key indicators for cosmic structure analysis. Recent observations (O1-O4) have recorded over 300 gravitational wave events, predominantly binary black hole mergers with mass ratios ranging from several to tens. Black hole images are reconstructed through Very Long Baseline Interferometry (VLBI) radio observations. These findings herald an era of multi-messenger studies across all four fundamental interactions. For binary black hole systems with moderate mass ratios in dark matter-rich environments, gravitational waves exhibit distinct waveform characteristics influenced by dark matter. Our analysis reveals that gravitational wave frequency peaks correlate approximately linearly with dark matter density exponents, yielding computational expressions that enable rapid dark matter detection through future gravitational wave observations.

Biography:

Hong-Bo Jin is an associate researcher at the National Astronomical Observatories of the Chinese Academy of Sciences, a member of LVK Collaboration , and a member of the scientific committee of KAGRA. He is engaged in data analysis and theoretical research related to dark matter, cosmic rays, and gravitational waves. His projects include the China Space Gravitational Wave Detection "Taiji Program," the China Dark Matter Detection Satellite Experiment, the AMS-02 experiment, and the GRAND experiment. He serves as the deputy chief designer of the scientific application system for China's first gravitational wave detection technology verification satellite "Taiji-1" . He has published over 70 SCI papers individually and with his research teams, in journals such as Nature Astronomy, Communication Physics, PRL, JCAP, PRD, APJ etc.

https://meeting.tencent.com/dm/udQ5kD0Bz3jU

ID: 452210876