Speaker
Dr
Tuguldur Sukhbold
(The Ohio State University)
Description
The likelihood that a massive star explodes, by any means, is
sensitive to the "compactness" of the presupernova core -
essentially how fast the density declines outside the iron core.
It turns out, perhaps surprisingly, that the compactness is not
a monotonic function of the star's birth mass, and, in some mass
regions, whether the star explodes or not is almost random. We
survey the explosion outcomes from a fine grid of masses by
assuming neutrino-driven mechanism and follow the evolution
using a large adaptive network. Unlike all of the prior
explorations, in this survey we give up the "luxury" of
exploding a star in any way we want, instead, the explosion
energies, nucleosynthesis yields, light curves and remnant
masses are all uniquely tied to the progenitor core structure.
While the resulting explosion energies and remnant mass
distributions show a good agreement with observations, the
nucleosynthetic yields show an interesting deficiency in
light s-process elements.
Primary author
Dr
Tuguldur Sukhbold
(The Ohio State University)