Title: Supernovae in binary systems: Unraveling binary evolution through SN 2022jli and other transient phenomena

Speaker: 陈平

Institute: 浙江大学

Host: 任彬

Time: 2026.5.28 周四 14:30

Location: 物理楼 552

Abstract: 

Most massive stars reside in binaries, making binarity a central driver of their evolution. In the isolated binary evolution channel that produces double compact objects, key processes—such as mass transfer, envelope stripping, binary mergers, and supernova explosions, as well as the survival or disruption of the system—shape the final outcomes. These processes leave diverse observational signatures that provide valuable clues to the pathways of binary evolution.

In this talk, I will mainly talk about the discovery of SN 2022jli, a stripped-envelope supernova that exploded in a binary system and led to the formation of a compact-object binary. I will also highlight other transient phenomena arising from massive binary evolution, emphasizing their observational signatures and what they reveal about the interplay between massive stars and their companions. Finally, I will explore evidence for pre-explosion interactions between compact objects and their companions—such as the precursor emission seen in some IIn, Ibn, and Icn supernovae.

Bio:

Ping Chen obtained his PhD in astrophysics from Peking University in 2021. He then worked as a Benoziyo postdoctoral fellow from September 2021 to January 2025 at the Weizmann Institute of Science in Israel. In 2025, he joined the Institute for Advanced Study in Physics at Zhejiang University as a tenure-track research professor (百人计划研究员). Ping Chen has broad interests in observational studies on high-energy transient phenomena. His current research focuses on supernovae in binary systems, including both thermonuclear supernovae and core-collapse supernovae.

Related papers:

https://ui.adsabs.harvard.edu/abs/2024Natur.625..253C/abstract

https://ui.adsabs.harvard.edu/abs/2023Natur.623..927H/abstract

https://ui.adsabs.harvard.edu/abs/2022Natur.609..685X/abstract

https://ui.adsabs.harvard.edu/abs/2025arXiv250308768B/abstract

https://ui.adsabs.harvard.edu/abs/2026A%26A...706A.183P/abstract

https://ui.adsabs.harvard.edu/abs/2026arXiv260103337P/abstract

https://ui.adsabs.harvard.edu/abs/2025Natur.644..634S/abstract