Net fields in protoplanetary and black hole accretion

Phil Armitage (JILA/Boulder) - February 24, 2014 at 12:10 pm

Angular momentum transport in accretion flows is frequently mediated by small-scale magnetohydrodynamic turbulence, whose gross properties can now be simulated from first principles. The strength of turbulence is known to be a sensitive function of the net flux threading the disk, and the evolution of that flux may then determine the long term behavior of the system. Drawing on results from numerical simulations of disks in both ideal and non-ideal MHD, I will highlight the importance of net flux for protoplanetary disks and for black holes disks that exhibit state transitions.

The seminar will be held in B-1 Hearst Field Annex.


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