Observations of Turbulence Generated by Magnetic Reconnection

被引：147

作者：

Eastwood, J. P. ^{[1
]}

Phan, T. D. ^{[1
]}

Bale, S. D. ^{[1
,3
]}

Tjulin, A. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 03期

关键词：

LOWER-HYBRID WAVES; FIELD; DISSIPATION; BETA;

D O I：

10.1103/PhysRevLett.102.035001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spacecraft observations of turbulence within a magnetic reconnection (guide field similar to 0) ion diffusion region are presented. In the inertial subrange, electric and magnetic fluctuations both followed a -5/3 power law; at higher frequencies, the spectral indices were -1 and -8/3, respectively. The dispersion relation was found to be consistent with fast-mode-whistler waves rather than kinetic Alfven-ion cyclotron waves. Lower hybrid waves, which could be enhanced by whistler mode conversion, were observed, but the associated anomalous resistivity was not found to significantly modify the reconnection rate.

引用

页数：4

共 25 条

[21] The onset of turbulence in collisionless magnetic reconnection [J].

Rogers, BN ;

Drake, JF ;

Shay, MA .

GEOPHYSICAL RESEARCH LETTERS, 2000, 27 (19) :3157-3160

[22] Stochastic Fermi acceleration of subrelativistic electrons and its role in impulsive solar flares [J].

Selkowitz, R ;

Blackman, EG .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 354 (03) :870-882

[23]

Sonnerup B. U. O., 1979, MAGNETIC FIELD RECON, P47

[24] Solar wind magnetic fluctuation spectra: Dispersion versus damping [J].

Stawicki, O ;

Gary, SP ;

Li, H .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2001, 106 (A5) :8273-8281

[25] THEORETICAL MODELS OF MAGNETIC-FIELD LINE MERGING .1. [J].

VASYLIUNAS, VM .

REVIEWS OF GEOPHYSICS, 1975, 13 (01) :303-336

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