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Optical Transients from the Unbound Debris of Tidal Disruption
Daniel Kasen, Enrico Ramirez-Ruiz
In the tidal disruption of a star by a black hole, roughly half of the stellar mass becomes bound and falls into the black hole, while the other half is ejected at high velocity. S…
Monte Carlo Radiative Transfer Simulations: Applications to Astrophysical Outflows and Explosions
S. A. Sim, M. Kromer, F. K. Roepke +4
The theory of radiative transfer provides the link between the physical conditions in an astrophysical object and the observable radiation which it emits. Thus accurately modelling…
Supernova Light Curves Powered by Young Magnetars
Daniel Kasen, Lars Bildsten
We show that energy deposited into an expanding supernova remnant by a highly magnetic (B ~ 5 x 10^14 G) neutron star spinning at an initial period of P ~ 2-20 ms can substantially…
Seeing the Collision of a Supernova with its Companion Star
Daniel Kasen
The progenitors of Type Ia and some core collapse supernovae are thought to be stars in binary systems, but little observational evidence exists to confirm the hypothesis. We sugge…
The Diversity of Type Ia Supernovae from Broken Symmetries
Daniel Kasen, Fritz Roepke, S. E. Woosley
Type Ia supernovae result when carbon-oxygen white dwarfs in binary systems accrete mass from companion stars, reach a critical mass, and explode. The near uniformity of their ligh…
Type Ia supernova science 2010-2020
D. A. Howell, A. Conley, M. Della Valle +47
In the next decade Type Ia supernovae (SNe Ia) will be used to test theories predicting changes in the Dark Energy equation of state with time. Ultimately this requires a dedicated…