Speaker
Adam Burrows
(University of Arizona)
Description
Core-collapse supernova explosions are fundamentally aspherical and require multi-
dimensional radiation/hydrodynamical tools to address them.
Recent simulations have hinted that the inner core of the protoneutron star
executes vigorous g-mode oscillations that damp by the emission of acoustic power.
I will present results from our recent 2D simulations that explore such core
pulsations, the generation of sound, neutrino emissions, and explosion. The sound
pulses radiated from the core steepen into shock waves that merge as they propagate
into the outer mantle and deposit their energy and momentum with high efficiency.
All models we address explode with the aid of such acoustic power, but what the
ultimate role of sound may be in the supernova phenomenon remains to be seen. I
will address the implications of the new simulations for the mechanism of supernova
explosions, the r-process, pulsar kicks, supernova blast morphology, and the
gravitational radiation signatures of the deaths of massive stars and I will
provide a roadmap for future theoretical explorations to test, verify, or refute
the new ideas that are emerging.
Author
Adam Burrows
(University of Arizona)
