Spectral anisotropies in high resolution three-dimensional simulations

被引：0

作者：

Landi, S. ^{[1
,2
]}

Franci, L. ^{[2
,3
]}

Papini, E. ^{[1
]}

Matteini, L. ^{[4
]}

Verdini, A. ^{[1
]}

Hellinger, P. ^{[5
]}

机构：

[1] Univ Firenze, Dipartimento Fis & Astron, Florence, Italy

[2] Osserv Astrofis Arcetri, INAF, Florence, Italy

[3] Queen Mary Univ London, London, England

[4] Observ Paris, LESIA, Meudon, France

[5] CAS, Astron Inst, Prague, Czech Republic

来源：

NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS | 2019年 / 42卷 / 01期

关键词：

MAGNETOHYDRODYNAMICS;

D O I：

10.1393/ncc/i2019-19018-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a 3D high resolution hybrid particle-in-cells simulation of decaying Alvenic turbulence and we compare its results with an analogous simulations at MHD scales. We show that, while MHD simulations show spectral anisotropies in agreement with critical balance arguments, at ion scale magnetic spectrum is more isotropic than predicted. This suggest that intermittent small-scales structures, like reconnecting current sheets can play a fundamental role in transferring energy across kinetic scales.

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页数：5

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