Dynamics of protoplanetary disks

PJ Armitage - Annual Review of Astronomy and Astrophysics, 2011‏ - annualreviews.org
Protoplanetary disks are quasi-steady structures whose evolution and dispersal determine
the environment for planet formation. I review the theory of protoplanetary disk evolution and …

Wind-driven accretion in protoplanetary disks. I. Suppression of the magnetorotational instability and launching of the magnetocentrifugal wind

XN Bai, JM Stone - The Astrophysical Journal, 2013‏ - iopscience.iop.org
We perform local, vertically stratified shearing-box MHD simulations of protoplanetary disks
(PPDs) at a fiducial radius of 1 AU that take into account the effects of both Ohmic resistivity …

[HTML][HTML] Global simulations of protoplanetary disks with net magnetic flux-i. non-ideal mhd case

W Béthune, G Lesur, J Ferreira - Astronomy & Astrophysics, 2017‏ - aanda.org
Context. The planet-forming region of protoplanetary disks is cold, dense, and therefore
weakly ionized. For this reason, magnetohydrodynamic (MHD) turbulence is thought to be …

Global simulations of the inner regions of protoplanetary disks with comprehensive disk microphysics

XN Bai - The Astrophysical Journal, 2017‏ - iopscience.iop.org
The gas dynamics of weakly ionized protoplanetary disks (PPDs) are largely governed by
the coupling between gas and magnetic fields, described by three non-ideal …

Thanatology in protoplanetary discs-The combined influence of Ohmic, Hall, and ambipolar diffusion on dead zones

G Lesur, MW Kunz, S Fromang - Astronomy & Astrophysics, 2014‏ - aanda.org
Protoplanetary discs are poorly ionised due to their low temperatures and high column
densities and are therefore subject to three “non-ideal” magnetohydrodynamic (MHD) …

Transport and accretion in planet-forming disks

NJ Turner, S Fromang, C Gammie, H Klahr… - … and Planets VI, 2014‏ - books.google.com
Planets appear to form in environments shaped by the gas flowing through protostellar disks
to the central young stars. The flows in turn are governed by orbital angular momentum …

Resonant drag instabilities in protoplanetary discs: the streaming instability and new, faster growing instabilities

J Squire, PF Hopkins - Monthly Notices of the Royal …, 2018‏ - academic.oup.com
We identify and study a number of new, rapidly growing instabilities of dust grains in
protoplanetary discs, which may be important for planetesimal formation. The study is based …

Hall effect controlled gas dynamics in protoplanetary disks. II. Full 3D simulations toward the outer disk

XN Bai - The Astrophysical Journal, 2014‏ - iopscience.iop.org
We perform three-dimensional stratified shearing-box magnetohydrodynamic (MHD)
simulations on the gas dynamics of protoplanetary disks with a net vertical magnetic flux of B …

Effect of ambipolar diffusion on the nonlinear evolution of magnetorotational instability in weakly ionized disks

XN Bai, JM Stone - The Astrophysical Journal, 2011‏ - iopscience.iop.org
We study the role of ambipolar diffusion (AD) on the nonlinear evolution of the
magnetorotational instability (MRI) in protoplanetary disks using the strong coupling limit …

Ring formation and dust dynamics in wind-driven protoplanetary discs: global simulations

A Riols, G Lesur, F Ménard - Astronomy & Astrophysics, 2020‏ - aanda.org
Large-scale vertical magnetic fields are believed to play a key role in the evolution of
protoplanetary discs. Associated with non-ideal effects, such as ambipolar diffusion, they are …