Properties of ion-cyclotron waves in the open solar corona

Details Properties of ion-cyclotron waves in the open solar corona Properties of ion-cyclotron waves in the open solar corona

2012-02-26

arxiv.org/abs/1202.5742v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

16 pages, 6 figures

Scientific paper

Remote observations of coronal holes have strongly implicated the resonant interactions of ion-cyclotron waves with ions as a principal mechanism for plasma heating and acceleration of the fast solar wind. In order to study these waves, a WKB (Wentzel-Kramers-Brillouin) linear perturbation analysis is used in the work frame of the collisionless multi-fluid model where we consider in addition to the protons a second ion component made of alpha particles. We consider a non-uniform background plasma describing a funnel region in the open coronal holes and we use the ray tracing Hamiltonian type equations to compute the ray path of the waves and the spatial variation of their properties.

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