WUNA Lunch Talk:

Lars Bildsten

Kavli Institute for Theoretical Physics

Diverse Energy Sources for Supernovae

November 16

12:10PM, Room 230, NRAO, Edgemont Road


The theoretical community is beginning to appreciate (and predict) the potential diversity of explosive outcomes from stellar evolution while the supernovae surveys are finding new kinds of supernovae. I will speak about two such new supernovae. The first are ultraluminous core collapse supernovae with radiated energies approaching 1051 ergs. I will present our recent work that explains these events with late-time energy deposition from rapidly rotating, highly magnetized neutron stars: magnetars. I will close with our theoretical work on helium shell detonations on accreting white dwarfs that predict a new class of supernovae; called ".Ia's". The first such candidate may well have been found by the Palomar Transient Factory.