Context. Models of a planet-disk interaction are mainly based on 2D and 3D viscous
hydrodynamic simulations. In such models, accretion is classically prescribed by an α v …

Dust grains play a significant role in several astrophysical processes, including gas/dust
dynamics, chemical reactions, and radiative transfer. Replenishment of small-grain …

The numerical study of relativistic magnetohydrodynamics (MHD) plays a crucial role in high-
energy astrophysics but unfortunately is computationally demanding, given the complex …

Context. Amongst the many plasma processes potentially relevant to the dynamics of the
intracluster medium (ICM), turbulence driven at observable scales by internal magnetised …

Planetesimal formation models often invoke the gravitational collapse of pebble clouds to
overcome various barriers to grain growth and propose processes to concentrate particles …

Recent studies show that non-radial structures arising from massive star shell convection
play an important role in shaping core-collapse supernova explosions. During the collapse …

Context. The magneto-thermal instability (MTI) is one of many possible drivers of stratified
turbulence in the intracluster medium (ICM) outskirts of galaxy clusters, where the …

Magnetic fields play a crucial role in shaping the dynamics of accreting compact objects.
Whether we consider the formation of a proto-neutron star during the gravitational collapse …

Astrophysical accretion discs that carry a significant mass compared with their central object
are subject to the effect of self‐gravity. In the context of circumstellar discs, this can, for …

Exascale systems are now appearing in the US, Japan, in Europe with two exascale
procurements in the coming years and very likely in China. These systems offer great …