Recent results from simulations of the magnetorotational instability

Details Recent results from simulations of the magnetorotational instability Recent results from simulations of the magnetorotational instability

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..274..422s&link_type=abstract

Advances in Plasma Astrophysics, Proceedings of the International Astronomical Union, IAU Symposium, Volume 274, p. 422-428

Astronomy and Astrophysics

Astrophysics

Accretion Disks, Instabilities, Mhd, Plasmas, Turbulence, Methods:Numerical

Scientific paper

The nonlinear saturation of the magnetorotational instability (MRI) is best studied through numerical MHD simulations. Recent results of simulations that adopt the local shearing box approximation, and fully global models that follow the entire disk, are described. Outstanding issues remain, such as a first-principles understanding of the dynamo processes that control saturation with no net magnetic flux. Important directions for future work include a better understanding of basic plasma processes, such as reconnection, dissipation, and particle acceleration, in the MHD turbulence driven by the MRI.

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