Past Event

HEP Seminar: Chengchao Yuan (Pennsylvania State University)

December 8, 2021
12:30 PM - 1:30 PM
Event time is displayed in your time zone.
Zoom and 705 Pupin Hall

"The multi-messenger view of galaxy and compact binary mergers"

The historical coincident detection of gravitational waves (GWs) and electromagnetic (EM) counterparts from the binary neutron star merger event GW 170817 heralds a new era in multi-messenger astronomy. At the same time, since the first discovery of the high-energy astrophysical neutrinos in 2012 by IceCube, neutrino astrophysics has made significant progress and has started playing an increasingly important role in multi-messenger analyses. In this talk, I will present our recent results on the neutrino and EM emissions from galaxy mergers, supermassive black hole mergers, and the short gamma-ray bursts embedded in AGN disks. I will discuss implications for the ongoing and next-generation optical/gamma-ray, neutrino, and GW missions, e.g., JWST, Fermi-LAT, CTA, IceCube, IceCube-Gen2, LIGO, and LISA.

Chengchao Yuan is a sixth-year Ph.D. student in Physics at Penn State. He is working on theoretical high-energy astrophysics and astroparticle physics with Peter Meszaros and Kohta Murase. Chengchao plans to graduate in spring 2022 and is looking for a postdoctoral position. As a member of the Institute of Gravitation and Cosmos (IGC), Chengchao is interested in multimessenger astrophysics. Specifically, how multimessenger analyses enlighten our understanding of the physical nature of the extreme universe. Before going to Penn State, Chengchao obtained the bachelor's degree in astrophysics at Nanjing University in 2016.