Institute of Astronomy

Theory of Supernovae in Binary Systems

SpeakerTalk DateTalk Series
Philipp Podsiadlowski29 July 2016Binary Stars Talks

Abstract

It is now widely accepted that the large diversity of supernova types and sub-types is almost certainly caused by the large variety of binary interactions. I will review how the various binary interactions (mass loss, mass accretion, binary mergers, tidal coupling) modify the pre-supernova structure of massive stars, in particular their envelopes, and how this accounts for most of the observed diversity. However, as only has been realized in the last 15 years, binary interactions do not only affect the envelope structure of massive supernova progenitors they also determine the final fate of the core, specifically whether the core collapses to a neutron star or black hole or produces a gamma-ray burst or other exotic events. I will summarize how the various binary interactions affect the final fate of stars and its potential implications for a variety of "normal" and exotic supernova events, including supernovae with a circumstellar medium ("LBV supernovae"), superluminous supernovae, gamma-ray burst sources, pair-instability supernovae and aLIGO gravitational-waves sources.

Presentation