The dispersion relations of dispersive Alfvén waves in superthermal plasmas

摘要: The effects of velocity distribution functions (VDFs) that exhibit a power law dependence on the high-energy tail have been subject intense research by space plasma community. Such functions, known as superthermal or kappa distributions, found to provide better fitting VDF measured several spacecraft in environment solar wind. In literature, general treatment for waves excited (bi-)Maxwellian plasmas is well established. However, either isotropic anisotropic, wave characteristics studied mostly limiting cases purely parallel perpendicular propagation. Contributions case obliquely propagating scarcely reported so far. this work we introduce mathematical formalism provides expressions dielectric tensor components and subsequent dispersion relations oblique dispersive Alfven (DAWs) resulting from VDF. We employ an distribution, but methods used here can be easily applied more anisotropic such bi-kappa product-bi-kappa. effect index thermal corrections DAW discussed.