3 papers
astro-ph.HE2025
Thermodynamics and collisionality in firehose-susceptible high- plasmas
A. F. A. Bott, M. W. Kunz, E. Quataert +2
We study the evolution of collisionless plasmas that, due to their macroscopic evolution, are susceptible to the firehose instability, using both analytic theory and hybrid-kinetic…
astro-ph.HE2024
Collisionless Magnetorotational Turbulence in Pair Plasmas: Steady-state Dynamics, Particle Acceleration, and Radiative Cooling
Fabio Bacchini, Vladimir Zhdankin, Evgeny A. Gorbunov +4
We present 3D fully kinetic shearing-box simulations of pair-plasma magnetorotational turbulence with unprecedented macro-to-microscopic scale separation. While retrieving the expe…
astro-ph.SR2024
Tearing-mediated reconnection in magnetohydrodynamic poorly ionized plasmas. I. Onset and linear evolution
Elizabeth A. Tolman, Matthew W. Kunz, James M. Stone +1
In high-Lundquist-number plasmas, reconnection proceeds via onset of tearing, followed by a nonlinear phase during which plasmoids continuously form, merge, and are ejected from th…