INTERMITTENCY OF SOLAR WIND DENSITY FLUCTUATIONS FROM ION TO ELECTRON SCALES

被引：71

作者：

Chen, C. H. K. ^{[1
,2
]}

Sorriso-Valvo, L. ^{[2
,3
]}

Safrankova, J. ^{[4
]}

Nemecek, Z. ^{[4
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

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

[3] UOS Cosenza, IPCF CNR, I-87036 Arcavacata Di Rende, Italy

[4] Charles Univ Prague, Fac Math & Phys, CR-18000 Prague, Czech Republic

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2014年 / 789卷 / 01期

关键词：

magnetic fields; plasmas; solar wind; turbulence; SELF-SIMILARITY; TURBULENCE; SPECTRUM; WAVES;

D O I：

10.1088/2041-8205/789/1/L8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The intermittency of density fluctuations in the solar wind at kinetic scales has been examined using high time resolution Faraday cup measurements from the Spektr-R spacecraft. It was found that the probability density functions (PDFs) of the fluctuations are highly non-Gaussian over this range, but do not show large changes in shape with scale. These properties are statistically similar to those of the magnetic fluctuations and are important to understanding the dynamics of small scale turbulence in the solar wind. Possible explanations for the behavior of the density and magnetic fluctuations are discussed.

引用

页数：5

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