Collective-wave spin-off and the gyroballistic continuum in gyroresonant absorption

Employing ray phase-space for wave propagation, we derive the first analytic formulas for energy transfer from a magnetosonic wave to the minority Bernstein wave, and the absorption profile, for plasma heating via minority gyroresonance. The profile stems from: (1) gyroresonant damping of the Bernstein wave; (2) phase mixing of the kinetic residue.