Abstract
We presents results from Smoothed Particle Magnetohydrodynamics simulations
of collapsing molecular cloud cores, and dynamo amplification of the magnetic
field in the presence of Mach 10 magnetised turbulence. Our star formation
simulations have produced, for the first time ever, highly collimated
magnetised protostellar jets from the first hydrostatic core phase. Up to 40\%
of the initial core mass may be ejected through this outflow. The primary
difficulty in performing these simulations is maintaining the divergence free
constraint of the magnetic field, and to address this issue, we have developed
a new divergence cleaning method which has allowed us to stably follow the
evolution of these protostellar jets for long periods. The simulations
performed of supersonic MHD turbulence are able to exponentially amplify
magnetic energy by up to 10 orders of magnitude via turbulent dynamo. To reduce
numerical dissipation, a new shock detection algorithm is utilised which is
able to track magnetic shocks throughout a large range of magnetic field
strengths.
Users
Please
log in to take part in the discussion (add own reviews or comments).