284 citations · 2.6k across the 63 of their papers we have counts for
8 papers · 1 filter
Triggering tearing in a forming current sheet with the mirror instability
Himawan W. Winarto, Matthew W. Kunz
We study the time-dependent formation and evolution of a current sheet (CS) in a magnetized, collisionless, high-beta plasma using hybrid-kinetic particle-in-cell simulations. An i…
Spontaneous magnetization of collisionless plasma through the action of a shear flow
Muni Zhou, Vladimir Zhdankin, Matthew W. Kunz +2
We study in a fully kinetic framework the generation of seed magnetic fields through the Weibel instability driven in an initially unmagnetized plasma by a large-scale shear force.…
Formation and evolution of protostellar accretion discs. II. From 3D simulation to a simple semi-analytic model of Class 0/I discs
Wenrui Xu, Matthew W. Kunz
We use a 3D radiative non-ideal magnetohydrodynamic (MHD) simulation to investigate the formation and evolution of a young protostellar disc from a magnetized pre-stellar core. The…
High-frequency heating of the solar wind triggered by low-frequency turbulence
Jonathan Squire, Romain Meyrand, Matthew W. Kunz +3
The fast solar wind's high speeds and nonthermal features require that significant heating occurs well above the Sun's surface. Two leading theories seem incompatible: low-frequenc…
Adaptive critical balance and firehose instability in an expanding, turbulent, collisionless plasma
A. F. A. Bott, L. Arzamasskiy, M. W. Kunz +2
Using hybrid-kinetic particle-in-cell simulation, we study the evolution of an expanding, collisionless, magnetized plasma in which strong Alfvénic turbulence is persistently drive…
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…