EFFECTS OF ELECTRON DRIFTS ON THE COLLISIONLESS DAMPING OF KINETIC ALFVÉN WAVES IN THE SOLAR WIND

التفاصيل البيبلوغرافية
العنوان: EFFECTS OF ELECTRON DRIFTS ON THE COLLISIONLESS DAMPING OF KINETIC ALFVÉN WAVES IN THE SOLAR WIND
المؤلفون: Stuart D. Bale, Daniel Verscharen, Chadi Salem, Christopher H. K. Chen, Yuguang Tong
المصدر: The Astrophysical Journal. 804:L36
بيانات النشر: American Astronomical Society, 2015.
سنة النشر: 2015
مصطلحات موضوعية: Physics, Differential equation, Turbulence, Astronomy and Astrophysics, Plasma, Electron, Dissipation, Kinetic energy, Computational physics, Solar wind, Distribution function, Astrophysics - Solar and Stellar Astrophysics, Physics - Space Physics, Physics::Plasma Physics, Space and Planetary Science, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics
الوصف: The collisionless dissipation of anisotropic Alfv\'enic turbulence is a promising candidate to solve the solar wind heating problem. Extensive studies examined the kinetic properties of Alfv\'en waves in simple Maxwellian or bi-Maxwellian plasmas. However, the observed electron velocity distribution functions in the solar wind are more complex. In this study, we analyze the properties of kinetic Alfv\'en waves in a plasma with two drifting electron populations. We numerically solve the linearized Maxwell-Vlasov equations and find that the damping rate and the proton-electron energy partition for kinetic Alfv\'en waves are significantly modified in such plasmas, compared to plasmas without electron drifts. We suggest that electron drift is an important factor to take into account when considering the dissipation of Alfv\'enic turbulence in the solar wind or other $\beta \sim 1$ astrophysical plasmas.
تدمد: 2041-8213
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be07175d8b8ab8e85c8a6c271ff061e2
https://doi.org/10.1088/2041-8205/804/2/l36
حقوق: OPEN
رقم الأكسشن: edsair.doi.dedup.....be07175d8b8ab8e85c8a6c271ff061e2
قاعدة البيانات: OpenAIRE