Exploring the statistics of magnetic reconnection X-points in kinetic particle-in-cell turbulence

被引：41

作者：

Haggerty, C. C. ^{[1
]}

Parashar, T. N. ^{[1
]}

Matthaeus, W. H. ^{[1
]}

Shay, M. A. ^{[1
]}

Yang, Y. ^{[1
]}

Wan, M. ^{[2
]}

Wu, P. ^{[3
]}

Servidio, S. ^{[4
]}

机构：

[1] Univ Delaware, Dept Phys & Astron, Bartol Res Inst, Newark, DE 19716 USA

[2] South Univ Sci & Technol China, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China

[3] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[4] Univ Calabria, Dipartimento Fis, Cosenza, Italy

来源：

PHYSICS OF PLASMAS | 2017年 / 24卷 / 10期

基金：

美国国家科学基金会;

关键词：

COLLISIONLESS; DISSIPATION; SYSTEM;

D O I：

10.1063/1.5001722

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Magnetic reconnection is a ubiquitous phenomenon in turbulent plasmas. It is an important part of the turbulent dynamics and heating of space and astrophysical plasmas. We examine the statistics of magnetic reconnection using a quantitative local analysis of the magnetic vector potential, previously used in magnetohydrodynamics simulations, and now employed to fully kinetic particle-in-cell (PIC) simulations. Different ways of reducing the particle noise for analysis purposes, including multiple smoothing techniques, are explored. We find that a Fourier filter applied at the Debye scale is an optimal choice for analyzing PIC data. Finally, we find a broader distribution of normalized reconnection rates compared to the MHD limit with rates as large as 0.5 but with an average of approximately 0.1. Published by AIP Publishing.

引用

页数：10

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