Conveners
Tuesday Afternoon
- Jeremy Goodman (Princeton University)
Ms
Susan Clark
(Columbia University)
05/08/2014, 14:00
Workshop Main Programme
Understanding the mechanism by which the magnetorotational instability (MRI) saturates is key to understanding the process by which it drives anisotropic MHD turbulence and transports angular momentum. Previous work has laid down the framework necessary to perform a weakly nonlinear analysis of the MRI near onset (that is, when the background magnetic field is just weak enough for the MRI to...
Dr
Gareth Murphy
(Niels Bohr International Academy, NBI)
05/08/2014, 14:30
Workshop Main Programme
The magnetorotational instability (MRI) plays a key role in transfer of angular momentum outward in accretion disks. We study the growth of secondary parasite instabilities which trigger the saturation of the MRI. We examine the late linear stage of the MRI and transition to turbulence. We seek to gain a qualitative and quantitive understanding of the nature of the turbulence resulting from...
Dr
Alexander Hubbard
(American Museum of Natural History)
05/08/2014, 15:30
Workshop Main Programme
Theories of magnetically mediated accretion flows have focused on shearing radial magnetic field by orbital motions. We show that this generates dynamically important Poynting flux which transports energy radially. This means that disks are better thought of as layered slabs powered by their inner, accreting edge, rather than concentric annuli with vertical energy transport. We also...
