Bidirectional energy cascades and the origin of kinetic Alfvénic and whistler turbulence in the solar wind.

Che, H; Goldstein, M L; Viñas, A F

Che, H; Goldstein, M L; Viñas, A F.

Afiliación

Che H; NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA.
Goldstein ML; NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA.
Viñas AF; NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA.

Phys Rev Lett ; 112(6): 061101, 2014 Feb 14.

Article en En | MEDLINE | ID: mdl-24580684

RESUMEN

The observed steep kinetic scale turbulence spectrum in the solar wind raises the question of how that turbulence originates. Observations of keV energetic electrons during solar quiet time suggest them as a possible source of free energy to drive kinetic turbulence. Using particle-in-cell simulations, we explore how the free energy released by an electron two-stream instability drives Weibel-like electromagnetic waves that excite wave-wave interactions. Consequently, both kinetic Alfvénic and whistler turbulence are excited that evolve through inverse and forward magnetic energy cascades.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2014 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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