Drift-Alfvén waves in space plasmas – theory and mode identification
- 1LPCE/CNRS, 3A, Avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France
- 2Department of Automatic Control and Systems Engineering, University of Sheffield, Sheffield S1 3JD, UK
- 3Institute of Physics of the Earth, 123995, 10 B. Gruzinskaya, Moscow, Russia
- *on leave from: Institute of Physics of the Earth, 123995, 10 B. Gruzinskaya, Moscow, Russia
Abstract. The theory of drift-Alfvén waves with the spatial scales comparable to the ion Larmor radius is developed. The dispersion relation, the wave impedance and variations of the plasma density perturbations versus the wave frequency are investigated. The relevance of theoretical results obtained to the Cluster observations in the cusp and near a reconnection X line in the Earth's magnetopause is discussed.