title: Dynamic properties of small-scale solar wind plasma fluctuations.
abstract: The paper presents the latest results of the studies of small-scale fluctuations in a turbulent flow of solar wind (SW) using measurements with extremely high temporal resolution (up to 0.03 s) of the bright monitor of SW (BMSW) plasma spectrometer operating on astrophysical SPECTR-R spacecraft at distances up to 350,000 km from the Earth. The spectra of SW ion flux fluctuations in the range of scales between 0.03 and 100 s are systematically analysed. The difference of slopes in low- and high-frequency parts of spectra and the frequency of the break point between these two characteristic slopes was analysed for different conditions in the SW. The statistical properties of the SW ion flux fluctuations were thoroughly analysed on scales less than 10 s. A high level of intermittency is demonstrated. The extended self-similarity of SW ion flux turbulent flow is constantly observed. The approximation of non-Gaussian probability distribution function of ion flux fluctuations by the Tsallis statistics shows the non-extensive character of SW fluctuations. Statistical characteristics of ion flux fluctuations are compared with the predictions of a log-Poisson model. The log-Poisson parametrization of the structure function scaling has shown that well-defined filament-like plasma structures are, as a rule, observed in the turbulent SW flows.
authors.affiliation: Space Research Institute (IKI), Russian Academy of Science, Moscow, Russia Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia orearm@gmail.com.
authors.forename: M O
authors.initials: MO
authors.lastname: Riazantseva
authors.affiliation: Space Research Institute (IKI), Russian Academy of Science, Moscow, Russia National Research Centre 'Kurchatov Institute', Moscow, Russia.
authors.forename: V P
authors.initials: VP
authors.lastname: Budaev
authors.affiliation: Space Research Institute (IKI), Russian Academy of Science, Moscow, Russia.
authors.forename: L M
authors.initials: LM
authors.lastname: Zelenyi
authors.affiliation: Space Research Institute (IKI), Russian Academy of Science, Moscow, Russia.
authors.forename: G N
authors.initials: GN
authors.lastname: Zastenker
authors.affiliation: Democritus University of Thrace, Department of Electrical Engineering, Xanthi, Greece.
authors.forename: G P
authors.initials: GP
authors.lastname: Pavlos
authors.affiliation: Charles University in Prague, Prague, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Safrankova
authors.affiliation: Charles University in Prague, Prague, Czech Republic.
authors.forename: Z
authors.initials: Z
authors.lastname: Nemecek
authors.affiliation: Charles University in Prague, Prague, Czech Republic.
authors.forename: L
authors.initials: L
authors.lastname: Prech
authors.affiliation: Charles University in Prague, Prague, Czech Republic.
authors.forename: F
authors.initials: F
authors.lastname: Nemec
keywords: intermittency; kinetic scales; plasma turbulence; solar wind
references.citation: Phys Rev Lett. 1994 Jan 17;72(3):336-339
references.pmid: 10056405
references.citation: Phys Rev Lett. 1994 Aug 15;73(7):959-962
references.pmid: 10057584
references.citation: Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Jun;67(6 Pt 2):066302
references.pmid: 16241343
references.citation: Phys Rev Lett. 2008 Oct 24;101(17):175005
references.pmid: 18999759
references.citation: Phys Rev Lett. 2009 Aug 14;103(7):075006
references.pmid: 19792654
references.citation: Phys Rev Lett. 2009 Oct 16;103(16):165003
references.pmid: 19905703
references.citation: Phys Rev Lett. 2012 Jul 20;109(3):035001
references.pmid: 22861861
references.citation: Phys Rev Lett. 2013 Jan 11;110(2):025004
references.pmid: 23383910
references.citation: Phys Rev Lett. 2013 May 31;110(22):225002
references.pmid: 23767731
references.citation: Philos Trans A Math Phys Eng Sci. 2015 May 13;373(2041):null
references.pmid: 25848075
references.citation: Philos Trans A Math Phys Eng Sci. 2015 May 13;373(2041):null
references.pmid: 25848081
references.citation: Philos Trans A Math Phys Eng Sci. 2015 May 13;373(2041):null
references.pmid: 25848082
references.citation: Philos Trans A Math Phys Eng Sci. 2015 May 13;373(2041):null
references.pmid: 25848084
references.citation: Philos Trans A Math Phys Eng Sci. 2015 May 13;373(2041):null
references.pmid: 25848085
references.citation: Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1993 Jul;48(1):R29-R32
references.pmid: 9960642