Henrik Latter - September 5, 2017

Gravitoturbulence and magnetic fields in young protostellar disks

In its early stages, a protostellar disk is sufficiently
massive to undergo gravitational instability. Meanwhile it may be
ionised to a degree that allows some coupling between any latent
magnetic field and the gas, and possibly the emergence of the
magnetorotational instability. The mutual interactions between
these instabilities could profoundly influence several important
processes, such as accretion variability, outbursts, fragmentation,
and dynamo action. In this talk, I will present recent simulations
in vertically stratified shearing boxes that incorporate
self-gravity and MHD and hence explore aspects of this 'mixed' regime.