Ion Kinetic Scale in the Solar Wind Observed

被引：66

作者：

Safrankova, Jana ^{[1
]}

Nemecek, Zdenek ^{[1
]}

Prech, Lubomir ^{[1
]}

Zastenker, Georgy N. ^{[2
]}

机构：

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

[2] Russian Acad Sci, Space Res Inst, Moscow 117997, Russia

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 02期

关键词：

WAVE TURBULENCE; DISSIPATION; SPECTRA; FLUCTUATIONS; DEPENDENCE;

D O I：

10.1103/PhysRevLett.110.025004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter shows the first results from the solar wind monitor onboard the Spektr-R spacecraft which measures plasma moments with a time resolution of 31 ms. This high-time resolution allows us to make direct observations of solar wind turbulence below ion kinetic length scales. We present examples of the frequency spectra of the density, velocity, and thermal velocity. Our study reveals that although these parameters exhibit the same behavior at the magnetohydrodynamic scale, their spectra are remarkably different at the kinetic scale. DOI: 10.1103/PhysRevLett.110.025004

引用

页数：5

共 36 条

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