132 citations · 370 across the 7 of their papers we have counts for
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Unstable magnetohydrodynamical continuous spectrum of accretion disks. A new route to magnetohydrodynamical turbulence in accretion disks
J. W. S. Blokland, R. Keppens, J. P. Goedbloed
We present a detailed study of localised magnetohydrodynamical (MHD) instabilities occuring in two--dimensional magnetized accretion disks. We model axisymmetric MHD disk tori, and…
Magneto-rotational overstability in accretion disks
J. W. S. Blokland, E. van der Swaluw, R. Keppens +1
We present analytical and numerical studies of magnetorotational instabilities occuring in magnetized accretion disks. In these studies we make use of the linearised compressible M…
Three-dimensional magnetohydrodynamic simulations of in situ shock formation in the coronal streamer belt
Yu. Zaliznyak, R. Keppens, J. P. Goedbloed
We present a numerical study of an idealized magnetohydrodynamic (MHD) configuration consisting of a planar wake flow embedded into a three-dimensional (3D) sheared magnetic field.…
Waves and Instabilities in Accretion Disks: MHD Spectroscopic Analysis
R. Keppens, F. Casse, J. P. Goedbloed
A complete analytical and numerical treatment of all magnetohydrodynamic waves and instabilities for radially stratified, magnetized accretion disks is presented. The instabilities…
Stellar winds, dead zones, and coronal mass ejections
R. Keppens, J. P. Goedbloed
Axisymmetric stellar wind solutions are presented, obtained by numerically solving the ideal magnetohydrodynamic (MHD) equations. Stationary solutions are critically analysed using…
Growth and saturation of the Kelvin-Helmholtz instability with parallel and anti-parallel magnetic fields
R. Keppens, G. Toth, R. H. J. Westermann +1
We investigate the Kelvin-Helmholtz instability occuring at the interface of a shear flow configuration in 2D compressible magnetohydrodynamics (MHD). The linear growth and the sub…