Articles | Volume 27, issue 12
https://doi.org/10.5194/angeo-27-4429-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.Polarization properties of Gendrin mode waves observed in the Earth's magnetosphere: observations and theory
Abstract. We show a case of an outer zone magnetospheric electromagnetic wave propagating at the Gendrin angle, within uncertainty of the measurements. The chorus event occurred in a "minimum B pocket". For the illustrated example, the measured angle of wave propagation relative to the ambient magnetic field θkB was 58°±4°. For this event the theoretical Gendrin angle was 62°. Cold plasma model is used to demonstrate that Gendrin mode waves are right-hand circularly polarized, in excellent agreement with the observations.