Role of the Plasmoid Instability in Magnetohydrodynamic Turbulence

被引：74

作者：

Dong, Chuanfei ^{[1
,2
]}

Wang, Liang ^{[1
,2
]}

Huang, Yi-Min ^{[1
,2
]}

Comisso, Luca ^{[1
,2
,3
,4
]}

Bhattacharjee, Arnitava ^{[1
,2
]}

机构：

[1] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[2] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08540 USA

[3] Columbia Univ, Dept Astron, New York, NY 10027 USA

[4] Columbia Univ, Columbia Astrophys Lab, 538 W 120th St, New York, NY 10027 USA

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 16期

关键词：

MAGNETIC RECONNECTION; SOLAR-WIND; GALAXIES; SPECTRUM; DYNAMICS; DRIVEN; FIELDS;

D O I：

10.1103/PhysRevLett.121.165101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The plasmoid instability in evolving current sheets has been widely studied due to its effects on the disruption of current sheets, the formation of plasmoids, and the resultant fast magnetic reconnection. In this Letter, we study the role of the plasmoid instability in two-dimensional magnetohydrodynamic (MHD) turbulence by means of high-resolution direct numerical simulations. At a sufficiently large magnetic Reynolds number (R-m = 10(6)), the combined effects of dynamic alignment and turbulent intermittency lead to a copious formation of plasmoids in a multitude of intense current sheets. The disruption of current sheet structures facilitates the energy cascade towards small scales, leading to the breaking and steepening of the energy spectrum. In the plasmoid-mediated regime, the energy spectrum displays a scaling that is close to the spectral index -2.2 as proposed by recent analytic theories. We also demonstrate that the scale dependent dynamic alignment exists in 2D MHD turbulence and the corresponding slope of the alignment angle is close to 0.25.

引用

页数：6

共 46 条

[11] Reconnection and small-scale fields in 2D-3V hybrid-kinetic driven turbulence simulations [J].

Cerri, S. S. ;

Califano, F. .

NEW JOURNAL OF PHYSICS, 2017, 19

[12] Magnetohydrodynamic Turbulence in the Plasmoid-mediated Regime [J].

Comisso, L. ;

Huang, Y. -M. ;

Lingam, M. ;

Hirvijoki, E. ;

Bhattacharjee, A. .

ASTROPHYSICAL JOURNAL, 2018, 854 (02)

[13] Plasmoid Instability in Forming Current Sheets [J].

Comisso, L. ;

Lingam, M. ;

Huang, Y. -M. ;

Bhattacharjee, A. .

ASTROPHYSICAL JOURNAL, 2017, 850 (02)

[14] General theory of the plasmoid instability [J].

Comisso, L. ;

Lingam, M. ;

Huang, Y. -M. ;

Bhattacharjee, A. .

PHYSICS OF PLASMAS, 2016, 23 (10)

[15] Self-consistent coronal heating and solar wind acceleration from anisotropic magnetohydrodynamic turbulence [J].

Cranmer, Steven R. ;

van Ballegooijen, Adriaan A. ;

Edgar, Richard J. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2007, 171 (02) :520-551

[16] Interstellar turbulence I: Observations and processes [J].

Elmegreen, BG ;

Scalo, J .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 2004, 42 :211-273

[17] Solar Wind Turbulent Cascade from MHD to Sub-ion Scales: Large-size 3D Hybrid Particle-in-cell Simulations [J].

Franci, Luca ;

Landi, Simone ;

Verdini, Andrea ;

Matteini, Lorenzo ;

Hellinger, Petr .

ASTROPHYSICAL JOURNAL, 2018, 853 (01)

[18] Magnetic Reconnection as a Driver for a Sub-ion-scale Cascade in Plasma Turbulence [J].

Franci, Luca ;

Cerri, Silvio Sergio ;

Califano, Francesco ;

Landi, Simone ;

Papini, Emanuele ;

Verdini, Andrea ;

Matteini, Lorenzo ;

Jenko, Frank ;

Hellinger, Petr .

ASTROPHYSICAL JOURNAL LETTERS, 2017, 850 (01)

[19]

GOLDSTEIN ML, 1995, ANNU REV ASTRON ASTR, V33, P283, DOI 10.1146/annurev.aa.33.090195.001435

[20] Intermittent MHD structures and classical discontinuities [J].

Greco, A. ;

Chuychai, P. ;

Matthaeus, W. H. ;

Servidio, S. ;

Dmitruk, P. .

GEOPHYSICAL RESEARCH LETTERS, 2008, 35 (19)

← 1 2 3 4 5 →