Temperature-anisotropy driven mirror waves in space plasma

In this paper an analysis of the excitation conditions of mirror waves is d one, which propagate parallel to an external magnetic field. There are foun d analytical expressions for the dispersion relations of the waves in case of different plasma conditions. These relations may be used in future to de velop the nonlinear theory of mirror waves. In comparison with former analy tical works, in the study the influence of the magnetic field and finite te mperatures of the ions parallel to the magnetic field are taken into accoun t. Application is done for the earth's magnetosheath.