Influence of Kappa Distributions on the Whistler Mode Instability

Kappa distributions possess an enhanced high-energy tail characterized by a spectral index ?. Here we consider how kappa influence the whistler mode instability. In relativistic regime, analyze effects of bi-kappa and loss-cone on linear nonlinear growth waves. We find that for ? = 2, rate corresponding to distribution exceeds bi-Maxwellian (? ?) electron anisotropies less than critical value. The threshold wave amplitude hot injected can be sensitively dependent value ?, but also depends crucially anisotropy, parallel temperature, frequency. plot time profiles magnetic field, frequency, total local rate, examine these depend sweep (chirp) rates chorus waves are found in range observed values, adopted plasma parameters. For given parameter ?, realistic may only exist restricted example, ? ? 4, require 4 as well sufficiently large anisotropy. summary, this new study finds instability is complex, not least because several system parameters