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Matthaeus WH, Wan M, Servidio S, Greco A, Osman KT, Oughton S, Dmitruk P. Intermittency, nonlinear dynamics and dissipation in the solar wind and astrophysical plasmas. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2015; 373:20140154. [PMID: 25848085 PMCID: PMC4394684 DOI: 10.1098/rsta.2014.0154] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/12/2015] [Indexed: 05/29/2023]
Abstract
An overview is given of important properties of spatial and temporal intermittency, including evidence of its appearance in fluids, magnetofluids and plasmas, and its implications for understanding of heliospheric plasmas. Spatial intermittency is generally associated with formation of sharp gradients and coherent structures. The basic physics of structure generation is ideal, but when dissipation is present it is usually concentrated in regions of strong gradients. This essential feature of spatial intermittency in fluids has been shown recently to carry over to the realm of kinetic plasma, where the dissipation function is not known from first principles. Spatial structures produced in intermittent plasma influence dissipation, heating, and transport and acceleration of charged particles. Temporal intermittency can give rise to very long time correlations or a delayed approach to steady-state conditions, and has been associated with inverse cascade or quasi-inverse cascade systems, with possible implications for heliospheric prediction.
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Affiliation(s)
- W H Matthaeus
- Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA Dipartimento di Fisica, Università della Calabria, Arcavacata, Rende, Italy Dipartimento di Fisica e Astronomia, Università di Firenze, Firenze, Italy
| | - Minping Wan
- Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA
| | - S Servidio
- Dipartimento di Fisica, Università della Calabria, Arcavacata, Rende, Italy
| | - A Greco
- Dipartimento di Fisica, Università della Calabria, Arcavacata, Rende, Italy
| | - K T Osman
- Centre for Fusion, Space and Astrophysics, University of Warwick, Coventry CV4 7AL, UK
| | - S Oughton
- Department of Mathematics, University of Waikato, Hamilton, New Zealand
| | - P Dmitruk
- Departamento de Fisica, FCEN, Universidad de Buenos Aires, Buenos Aires, Argentina
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Breech B. Probability distributions of the induced electric field of the solar wind. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002ja009529] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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