Physical Processes and Radiations around Neutron Stars

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 Time:  星期三, 12月 29, 2021, 09:00am
 Title:  Physical Processes and Radiations around Neutron Stars
 Speaker:  Dr. Xinyu Li(李昕宇)(Perimeter Institute)

S727 & Online via Zoom


The environment around neutron stars features high magnetization, strong gravity, and relativistic particles. With radio, X-ray, and gravitational wave observations, neutron stars are perfect laboratories to study high-energy radiations and fundamental physics. In this talk, I will focus on two specific systems: magnetar and neutron star post-merger disk. I will first discuss several physical processes involved in producing magnetar radiation where strong magnetic fields are important. In the second half, I will discuss the observable imprints of neutrino flavor oscillation on the r-process nucleosynthesis and kilonova emission. These physical processes are also important in other systems like fast radio bursts and core-collapse supernovae. Neutron stars have been mysteries to us for half a century. The next decade will be a golden era to study neutron stars and high-energy astrophysics, as multi-messenger astronomy with telescopes like FAST, eXTP, and Einstein Probe will greatly expand our knowledge.

Xinyu Li(李昕宇) is currently a joint postdoctoral fellow at Canadian Institute for Theoretical Astrophysics and Perimeter Institute. His research interests include theoretical high energy astrophysics, cosmology and plasma astrophysics. He obtained his PhD degree in physics at Columbia University. Before that, he earned his Bachelor degree from the University of Hong Kong and spent his first year of undergraduate at Tsinghua University.