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abstract:

Massive stars, which are the progenitors of core-collapse supernovae, are known to be primarily born in binary or higher order multiple systems. Therefore, binarity is essential for understanding supernova physics and conversely, the supernova physics are essential for understanding binary evolution. In this talk, I will briefly summarize my past work on the interplay between binary interactions and supernova explosions based on 1-3D hydrodynamical modelling and stellar evolution calculations. Specifically, I will focus on three different topics; ejecta-companion interaction, neutron star-star collisions, neutron star rocket mechanism. For the first part, I will highlight how the collision between supernova ejecta and binary companions can alter the appearance of the star and how that can be used to constrain binary evolution physics by monitoring post-supernova companion photometry. In the second part, I demonstrate how new-born neutron stars can sometimes penetrate the companion envelope and possibly lead to various interesting phenomena like forming hypervelocity stars, pulsar planets, peculiar supernovae and Thorne-Zytkow objects. In the last part I will introduce the neutron star rocket mechanism, that has been proposed in the 1970s, and how that can have significant impacts on binary orbits despite the magnitude being rather small.