Gravitational wave insights into Type Ia supernova
Valeriya Korol (MPA, Garching)
Tuesday 29/10/2024 @ 14:00, Sala Antonio Sollima (IV piano Battiferro)
The nature of Type Ia supernovae progenitors has been an open question for decades, primarily due to limitations of traditional electromagnetic observation methods. In this talk, I will argue that gravitational wave observations with the upcoming Laser Interferometer Space Antenna (LISA) offer the most promising way to test one of the leading progenitor scenarios—the double-degenerate scenario, which involves a binary system of two white dwarf stars. I will show LISA's unique potential to survey double white dwarf binaries across the entire Galaxy, providing the first complete sample of potential Type Ia supernovae progenitors. I will also show how LISA's ability to characterise these systems can reveal whether they are likely to become Type Ia supernovae, and discuss the (unlikely but very) exciting potential of observing gravitational-wave and electromagnetic signals from a Type Ia supernova event in real-time.