187 citations · 725 across the 14 of their papers we have counts for
14 papers
Gravito-turbulence and dynamo in poorly ionised protostellar discs. I. Zero-net-flux case
A. Riols, W. Xu, G. Lesur +2
In their early stages, protoplanetary discs are sufficiently massive to undergo gravitational instability (GI). This instability is thought to be involved in mass accretion, planet…
Observations of edge-on protoplanetary disks with ALMA I. Results from continuum data
M. Villenave, F. Menard, W. R. F. Dent +15
We analyze a sample of 12 HST-selected edge-on protoplanetary disks for which the vertical extent of the emission layers can be constrained directly. We present ALMA high angular r…
Ring formation and dust dynamics in wind-driven protoplanetary discs: global simulations
A. Riols, G. Lesur, F. Menard
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…
Dust dynamics and vertical settling in gravitoturbulent protoplanetary discs
A. Riols, B. Roux, H. Latter +1
Gravitational instability (GI) controls the dynamics of young massive protoplanetary discs. Apart from facilitating gas accretion on to the central protostar, it must also impact o…
Spontaneous ring formation in wind-emitting accretion discs
A. Riols, G. Lesur
Rings and gaps have been observed in a wide range of protoplanetary discs, from young systems like HLTau to older discs like TW Hydra. Recent disc simulations have shown that magne…
Gravitoturbulent dynamos in astrophysical discs
A. Riols, H. Latter
The origin of large-scale and coherent magnetic fields in astrophysical discs is an important and long standing problem. Researchers commonly appeal to a turbulent dynamo, sustaine…
Dust settling and rings in the outer regions of protoplanetary discs subject to ambipolar diffusion
A. Riols, G. Lesur
MHD turbulence plays a crucial role in the dust dynamics of protoplanetary discs. It affects planet formation, vertical settling and is one possible origin of the large scale axisy…
Spiral density waves and vertical circulation in protoplanetary discs
A. Riols, H. Latter
Spiral density waves dominate several facets of accretion disc dynamics --- planet-disc interactions and gravitational instability (GI) most prominently. Though they have been exam…
Magnetorotational instability and dynamo action in gravitoturbulent astrophysical discs
A. Riols, H. Latter
Though usually treated in isolation, the magnetorotational and gravitational instabilities (MRI and GI) may coincide at certain radii and evolutionary stages of protoplanetary disc…
Gravito-turbulence and the excitation of small-scale parametric instability in astrophysical discs
A. Riols, H. Latter, S-J. Paardekooper
Young protoplanetary discs and the outer radii of active galactic nucleii may be subject to gravitational instability and, as a consequence, fall into a `gravitoturbulent' state. W…
Magnetorotationally driven wind cycles in local disc models
A. Riols, G. I. Ogilvie, H. Latter +1
Jets, from the protostellar to the AGN context, have been extensively studied but their connection to the turbulent dynamics of the underlying accretion disc is poorly understood.…
Magnetorotational dynamo chimeras. The missing link to turbulent accretion disk dynamo models?
A. Riols, F. Rincon, C. Cossu +3
In Keplerian accretion disks, turbulence and magnetic fields may be jointly excited through a subcritical dynamo process involving the magnetorotational instability (MRI). High-res…
Dissipative effects on the sustainment of a magnetorotational dynamo in Keplerian shear flow
A. Riols, F. Rincon, C. Cossu +3
The magnetorotational (MRI) dynamo has long been considered one of the possible drivers of turbulent angular momentum transport in astrophysical accretion disks. However, various n…
Global bifurcations to subcritical magnetorotational dynamo action in Keplerian shear flow
A. Riols, F. Rincon, C. Cossu +4
Magnetorotational dynamo action in Keplerian shear flow is a three-dimensional, nonlinear magnetohydrodynamic process whose study is relevant to the understanding of accretion and…