کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1767658 1020199 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Standing Alfvén waves with m ≫ 1 in a dipole magnetosphere with moving plasma and aurorae
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Standing Alfvén waves with m ≫ 1 in a dipole magnetosphere with moving plasma and aurorae
چکیده انگلیسی

The structure of standing Alfvén waves with large azimuthal wave numbers (m ≫ 1) is studied in a dipole model of the magnetosphere with rotating plasma. In the direction across magnetic shells the structure of such waves is determined by their dispersion associated with curvature of geomagnetic field lines and corresponds to the travelling wave localized between toroidal and poloidal resonant surfaces. In projection into the ionosphere (along geomagnetic field lines) this structure is similar to the structure of a discrete auroral arc. The azimuthal structure of an auroral arc is similar to azimuthal structure of Alfvén waves with m ∼ 100. Possible interaction mechanisms between the Alfvén waves and energetic electron fluxes forming auroral arcs are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 42, Issue 5, 1 September 2008, Pages 970–978
نویسندگان
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