Colloquium on Jul. 3, 2025

Type Ia Supernova explosions in Binary Systems

Speaker: Zhengwei Liu (YNO)

Venue: SWIFAR Building 2111

Time: 16:00 PM, Wednesday, Jul. 3, 2025

Abstract:

Type Ia supernovae (SNe Ia) play a key role in the fields of astrophysics and cosmology. SNe Ia are thought to arise from thermonuclear explosions of white dwarfs in binary systems. Despite the efforts from both the theoretical and observational sides, there is no consensus on the fundamental aspects of the nature of SN Ia progenitors and their actual explosion mechanism. This fundamentally flaws our understanding of these important astrophysical objects. This talk will introduce the recent theoretical and observational progress in addressing the SN Ia progenitor and explosion mechanism in terms of the observables at various stages of the explosion, including rates and delay times, pre-explosion companion stars, early-time properties, ejecta-companion interaction, circumstellar material interaction, surviving companion stars, supernova remnant properties, and so on.