Event

Nov 19, 2020 3:45 pm - Virtual - Colloquium
Tuguldur Sukhbold - OSU
Islands of explosions in a sea of implosions


The wealth of observational data on supernova light curves, compact object
masses, and chemical abundances holds critical clues on how massive stars
live and die. However, the utility of these observables were severely
hampered due to our limited understanding of the late stages of evolution in
massive stars and their explosion mechanism. We address this problem by
combining novel insights into their final phases of evolution with the
development of a new and efficient method for simulating supernovae through
calibrated neutrino-driven explosions. In this talk, I will review some of
the most exciting results we have found from the application of this
approach to various populations of massive stars, which has profound
implications for their final fates, and to the properties of neutron stars
and black holes, supernova light curves, and nucleosynthesis produced
through their demise. The results provide a natural solution to some of the
long standing open problems in astronomy and also challenge some of the
conventional views that were held for many decades. I will end the talk by
discussing ideas and prospects on using the existing and future
gravitational wave measurements to constrain the physics of stellar
evolution and supernova explosions.