Speaker
Description
The subject of massive star explosions driven by a first-order hadron-quark matter phase transition has gained increasing attention in the community, e.g., providing a novel path to the existence of massive pulsars of 2 solar masses at birth [1] and the creation of ejected r-process material in these explosive events [2]. However, no final conclusions can yet be drawn from these results about the very existence of such supernova explosions. It would require a more detailed analysis of the role of both, the stellar progenitors and the QCD equation of state. These are the subjects of active research in the field. In my presentation, I am going to focus on these aspects and discuss the recent findings with regard to the supernova explodibility as well as connections to observational aspects. The latter refers to a nonstandard, non-monotonous neutrino emission, associated with the presence of a QCD phase transition, which yields the launch of a millisecond neutrino burst that is observable for the present generation of neutrino detectors for a galactic event.
[1] Fischer et al., Nature Astronomy, Vol.2, p. 980 (2018)
[2] Fischer et al., The Astrophysical Journal, Vol.894, 9 (2020)
