Statistical Analysis of Field-Aligned Alfvenic Turbulence and Intermittency in Fast Solar Wind

被引：4

作者：

Carbone, Francesco ^{[1
]}

Telloni, Daniele ^{[2
]}

Sorriso-Valvo, Luca ^{[3
,4
]}

Zank, Gary ^{[5
,6
]}

Zhao, Lingling ^{[5
]}

Adhikari, Laxman ^{[5
]}

Bruno, Roberto ^{[7
]}

机构：

[1] Univ Calabria, Natl Res Council, Inst Atmospher Pollut Res, I-87036 Arcavacata Di Rende, Italy

[2] Astrophys Observ Torino, Natl Inst Astrophys, Via Osservatorio 20, I-10025 Pino Torinese, Italy

[3] Escuela Politec Nacl, Dept Fis, Ladron De Guevera E11-253, Quito 170517, Ecuador

[4] CNR, Ist Sci & Tecnol Plasmi, Via Amendola 122-D, I-70126 Bari, Italy

[5] Univ Alabama Huntsville, Ctr Space Plasma & Aeron Res CSPAR, Huntsville, AL 35899 USA

[6] Univ Alabama Huntsville, Dept Space Sci, Huntsville, AL 35899 USA

[7] Natl Inst Astrophys, Inst Space Astrophys & Planetol, Via Fosso Cavaliere 100, I-00133 Rome, Italy

来源：

UNIVERSE | 2020年 / 6卷 / 08期

关键词：

solar wind; turbulence; scaling laws; EMPIRICAL MODE DECOMPOSITION; INTERSTELLAR TURBULENCE; INERTIAL-RANGE; ANISOTROPY; FLUCTUATIONS; SPECTRUM; WAVES; POWER;

D O I：

10.3390/universe6080116

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The statistical properties of fast Alfvenic solar wind turbulence have been analyzed by means of empirical mode decomposition and the associated Hilbert spectral analysis. The stringent criteria employed for the data selection in the Wind spacecraft database, has made possible to sample multiple k(parallel to) field-aligned intervals of the three magnetic field components. The results suggest that the spectral anisotropy predicted by the critical balance theory is not observed in the selected database, whereas a Kolmogorov-like scaling (E(k(parallel to)) similar to k(-5/3)) and a weak or absent level of intermittency are robust characteristics of the Alfvenic slab component of solar wind turbulence.

引用

页数：14

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