Publications (8)
Destabilization mechanism of the collisional microtearing mode in magnetized slab plasmas
Mitsuyoshi Yagyu, Ryusuke Numata
The destabilization mechanism of the collisional microtearing mode driven by an electron temperature gradient is studied using theoretical analyses and gyrokinetic simulations incl…
Electron and Ion Heating during Magnetic Reconnection in Weakly Collisional Plasmas
Ryusuke Numata, Nuno F. Loureiro
Gyrokinetic simulations of magnetic reconnection are presented to investigate plasma heating for strongly magnetized, weakly collisional plasmas. For a low plasma beta case, parall…
Turbulent Thermal Equilibration of Collisionless Magnetospheric Plasmas
Ryusuke Numata
How thermal equilibrium is determined in a weakly collisional plasma is a fundamental question in plasma physics. This letter shows that the turbulence driven by the magnetic curva…
Marginally Stable Current Sheets in Collisionless Magnetic Reconnection
Camille Granier, Dario Borgogno, Luca Comisso +3
Non-collisional current sheets that form during the nonlinear development of magnetic reconnection are characterized by a small thickness, of the order of the electron skin depth.…
AstroGK: Astrophysical Gyrokinetics Code
Ryusuke Numata, Gregory G. Howes, Tomoya Tatsuno +2
The gyrokinetic simulation code AstroGK is developed to study fundamental aspects of kinetic plasmas and for applications mainly to astrophysical problems. AstroGK is an Eulerian s…
Random forcing with a constant power input for two-dimensional gyrokinetic simulations
Ryusuke Numata
A method of random forcing with a constant power input for two-dimensional gyrokinetic turbulence simulations is developed for the study of stationary plasma turbulence. The proper…