Abstract
In cosmic plasmas magnetized plasmas with high density and high temperature are often observed. In such plasmas, we investigate what kinds of interaction and wave excitation are developed, by using two dimensional in real space and three dimensional in velocity space fully relativistic electromagnetic PIC code. As the remarkable results, strong electric fields are produced by the electron thermal expansion from the high density and high temperature region. And particles expanded by the thermal energy interact with background cold plasma, resulting in several waves generated both perpendicular and parallel direction to the ambient magnetic field. We propose the new mechanism of 2ωe mode excitation from the hot plasma.
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