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Center for Nonlinear Studies |
Chorus is a type of whistler waves frequently observed in Earth’s inner magnetosphere and plays an important role in the dynamics of the outer radiation belt. An interesting characteristics of chorus is the presence of a frequency gap at about half the electron cyclotron frequency, separating the lower band and the upper band. In this talk, I will review the observations and theories on the banded structure of chorus, and focus on two aspects of the problem: 1) the linear theory for banded chorus generation; 2) the nonlinear wave-particle interaction as a possible formation mechanism of gaps in banded chorus.
Host: Jeffrey Hyman