5 papers
Reduced Effective Viscosity from Anisotropic Transport and Plasma Instabilities in the Sloshing Cores of Galaxy Clusters
John A. ZuHone, Stephen Majeski, Annie Heinrich +3
The G magnetic field in the intracluster medium (ICM) introduces a pressure anisotropy with respect to the magnetic field's direction that manifests as an anisotropic visco…
The Role of Whistler and Ion Cyclotron Waves in Particle Escape from Mirror Modes in the Intracluster Medium
Petr Ugarov, Francisco Ley, Ellen Zweibel
Electron and ion-cyclotron waves are well known to exist in solar system plasmas but their existence and importance in galaxy clusters is an open question. Guided by numerical simu…
On the double-adiabatic equations in the relativistic regime
Francisco Ley, Aaron Tran, Ellen G. Zweibel
We revisit the double adiabatic evolution equations and extend them to the relativistic and ultrarelativistic regimes. We analytically solve the relativistic, time-dependent drift…
Secondary Whistler and Ion-cyclotron Instabilities driven by Mirror Modes in Galaxy Clusters
Francisco Ley, Ellen G. Zweibel, Drake Miller +1
Electron cyclotron waves (whistlers), are commonly observed in plasmas near Earth and the solar wind. In the presence of nonlinear mirror modes, bursts of whistlers, usually called…
Stochastic Ion Acceleration by the Ion-cyclotron Instability in a Growing Magnetic Field
Francisco Ley, Mario Riquelme, Lorenzo Sironi +2
Using 1D and 2D particle-in-cell (PIC) simulations of a plasma with a growing magnetic field , we show that ions can be stochastically accelerated by the ion-cyclotron (IC…