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Turbulent resistivity driven by the magnetorotational instability
Sebastien Fromang, James M. Stone
We measure the turbulent resistivity in the nonlinear regime of the MRI, and evaluate the turbulent magnetic Prandtl number. We perform a set of numerical simulations with the Eule…
Global MHD simulations of stratified and turbulent protoplanetary discs. II. Dust settling
Sebastien Fromang, Richard P. Nelson
The aim of this paper is to study the vertical profile of small dust particles in protoplanetary discs in which angular momentum transport is due to MHD turbulence driven by the ma…
Direct numerical simulations of the galactic dynamo in the kinematic growing phase
Christophe Gissinger, Sebastien Fromang, Emmanuel Dormy
We present kinematic simulations of a galactic dynamo model based on the large scale differential rotation and the small scale helical fluctuations due to supernova explosions. We…