Christian Ott
The Physics & Astronomy Colloquium Series presents Christian Ott of California Institute of Technology on “New Insights into Massive Star Explosions” on Friday, Nov. 13, at 4:10 p.m. in Walter 245.
Abstract: Core-collapse supernovae from massive stars are among the most energetic events in the universe. They liberate a mass-energy equivalent of ~15% of a solar mass in the collapse of their progenitor star’s core. The majority (~99%) of this energy is carried away by neutrinos, while (~1%) is transferred to the kinetic energy of the explosive outflow. A smaller, yet still tremendous amount of energy is emitted in electromagnetic and gravitational waves. The stellar collapse phenomenon and its range of outcomes pose a formidable challenge to computational simulation. I discuss recent advances made on the basis of new multi-dimensional simulations and highlight the role of turbulence in the core-collapse supernova phenomenon. I also present first results from new simulations of extreme magneto-rotationally powered core-collapse supernovae in the context of hypernovae and long gamma-ray bursts.
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