STATISTICAL ANALYSIS OF THE MAGNETIC HELICITY SIGNATURE OF THE SOLAR WIND TURBULENCE AT 1 AU

被引：19

作者：

Markovskii, S. A. ^{[1
]}

Vasquez, Bernard J. ^{[1
]}

Smith, Charles W. ^{[1
]}

机构：

[1] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA

来源：

ASTROPHYSICAL JOURNAL | 2015年 / 806卷 / 01期

基金：

美国国家科学基金会;

关键词：

plasmas; solar wind; turbulence; OBSERVATIONAL CONSTRAINTS; DISSIPATION RANGE; FIELD TURBULENCE; ANISOTROPY; CASCADE; CYCLOTRON; WAVES; FLUCTUATIONS; SPECTRA; EVOLUTION;

D O I：

10.1088/0004-637X/806/1/78

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The absolute value of the magnetic helicity spectrum of the solar wind turbulence often has a peak at kinetic scales. This helicity signature is important for understanding the mechanism of the turbulent cascade. In this paper, a statistical analysis of the magnetic helicity is performed. For this purpose, a database of the solar wind intervals with the helicity signature was assembled using Wind spacecraft magnetic and plasma data. New statistically significant correlations between the magnetic helicity and the properties of the background plasma are found. The position of the signature within the spectrum depends on the proton gyroscale and the proton inertial scale. Possible mechanisms responsible for the observed trends are discussed. The helicity peak is interpreted as a result of two competing processes, one of which generates the helicity and the other one eliminates it.

引用

页数：6

共 50 条

[1] Statistical analysis of the high-frequency spectral break of the solar wind turbulence at 1 AU
Markovskii, S. A.
Vasquez, Bernard J.
Smith, Charles W.
[J]. ASTROPHYSICAL JOURNAL, 2008, 675 (02): : 1576 - 1583
[2] ON THE INTERPRETATION OF MAGNETIC HELICITY SIGNATURES IN THE DISSIPATION RANGE OF SOLAR WIND TURBULENCE
Howes, G. G.
Quataert, E.
[J]. ASTROPHYSICAL JOURNAL LETTERS, 2010, 709 (01): : L49 - L52
[3] Magnetic helicity in the solar wind
Smith, CW
[J]. MAGNETIC HELICITY AT THE SUN, IN SOLAR WIND AND MAGNETOSPHERES: VISTAS FROM X-RAY OBSERVATORIES, 2003, 32 (10): : 1971 - 1980
[4] Complexity of Magnetic-field Turbulence at Reconnection Exhausts in the Solar Wind at 1 au
Miranda, Rodrigo A.
Valdivia, Juan A.
Chian, Abraham C-L
Munoz, Pablo R.
[J]. ASTROPHYSICAL JOURNAL, 2021, 923 (02):
[5] Statistical analysis of transfer of fluctuations in solar wind turbulence
Strumik, M.
Macek, W. M.
[J]. NONLINEAR PROCESSES IN GEOPHYSICS, 2008, 15 (04) : 607 - 613
[6] PROPERTIES OF THE FLUCTUATING MAGNETIC HELICITY IN THE INERTIAL AND DISSIPATION RANGES OF SOLAR-WIND TURBULENCE
GOLDSTEIN, ML
ROBERTS, DA
FITCH, CA
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1994, 99 (A6) : 11519 - 11538
[7] Magnetic Helicity Signature and Its Role in Regulating Magnetic Energy Spectra and Proton Temperatures in the Solar Wind
Zhao, G. Q.
Lin, Y.
Wang, X. Y.
Feng, H. Q.
Wu, D. J.
Li, H. B.
Zhao, A.
Liu, Q.
[J]. ASTROPHYSICAL JOURNAL, 2021, 906 (02):
[8] Statistical Properties of Electron-scale Magnetic Peaks in the Solar Wind at 1 au
Wang, G. Q.
Volwerk, M.
Xiao, S. D.
Wu, M. Y.
Chen, Y. Q.
Zhang, T. L.
[J]. ASTROPHYSICAL JOURNAL, 2021, 921 (02):
[9] Statistical Properties of Sub-Ion Magnetic Holes in the Solar Wind at 1 AU
Wang, G. Q.
Zhang, T. L.
Xiao, S. D.
Wu, M. Y.
Wang, G.
Liu, L. J.
Chen, Y. Q.
Volwerk, M.
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2020, 125 (10)
[10] Magnetic Helicity Associated with the Proton Temperature Anisotropy Instabilities in the Presence of an Imbalanced Solar Wind Turbulence
Markovskii, S. A.
Vasquez, Bernard J. J.
[J]. ASTROPHYSICAL JOURNAL, 2023, 952 (01):

← 1 2 3 4 5 →