Multi-messenger astrophysics is a rapidly growing field of astrophysics that involves the study of astronomical phenomena using multiple forms of observations, such as electromagnetic radiation (i.e. light), gravitational waves, neutrinos, and cosmic rays. The astronomical objects that emit multi-messenger signals usually involve compact and energetic objects in the universe, including neutron stars and stellar-sized or even galactic-sized black holes.
The HKIAA members are actively working in the direction of multi-messenger astrophysics, with focus on gravitational waves (Hannnuksela, Zhao, Wong), neutrinos (Liu, Zhao, Zhong, Zhang, Lin), cosmic rays (Kenny C. Y. Ng, Zhang), and electromagnetic radiation from the GW, neutrino emitters (Dai, Zhang).
