Core-collapse supernovae (CCSNe) are the most important source of elements in the Universe. They are multi-messenger events being targeted by observational campaigns covering the entire electromagnetic spectrum, as well as by neutrino and gravitational wave detectors. Multi-dimensional, multi-physics simulations are required to connect theoretical models with observations, and to understand the driving mechanism(s) of CCSNe. We are developing the GenASiS framework to study core-collapse supernova explosions on supercomputers. GenASiS will include magnetohydrodynamics (MHD), gravity, and neutrino radiation transport. A global instability of the supernova shock wave plays a central role in supernova theory; both in facilitating the explosion, and in connecting pulsar properties (proper motion, spin, and magnetic field) to dynamics in the supernova environment. I will present some resent simulations, performed using the MHD capabilities of GenASiS, which illustrate how strong magnetic fields may arise quite generally in the supernova environment, as a result of the shock instability. Future directions towards more realistic simulations will also be discussed.
Eirik Endeve (Oak Ridge National Laboratory): Kicks, spins, and fields from supernova dynamics
Fredagskollokvium
Publisert 2. mars 2011 10:28
- Sist endret 28. apr. 2011 10:34