On the intermittent character of interplanetary magnetic field fluctuations
arXiv:astro-ph/0702114 · doi:10.1063/1.2711429
Abstract
Interplanetary magnetic field magnitude fluctuations are notoriously more intermittent than velocity fluctuations in both fast and slow wind. This behaviour has been interpreted in terms of the anomalous scaling observed in passive scalars in fully developed hydrodynamic turbulence. In this paper, the strong intermittent nature of the interplanetary magnetic field is briefly discussed comparing results performed during different phases of the solar cycle. The scaling properties of the interplanetary magnetic field magnitude show solar cycle variation that can be distinguished in the scaling exponents revealed by structure functions. The scaling exponents observed around solar maximum coincide, within the errors, to those measured for passive scalars in hydrodynamic turbulence. However, it is also found that the values are not universal in the sense that the solar cycle variation may be reflected in dependence on the structure of the velocity field.
arXiv comment19 pages, in press on Physics of Plasmas
References in corpus (11)
- Particles and fields in fluid turbulence
- Intermittency in the solar wind turbulence through probability distribution functions of fluctuations
- Fronts in passive scalar turbulence
- Intermittency, scaling and the Fokker-Planck approach to fluctuations of the solar wind bulk plasma parameters as seen by the WIND spacecraft
- Lagrangian method for multiple correlations in passive scalar advection
- The role of compressibility in solar wind plasma turbulence
- Scaling and a Fokker-Planck model for fluctuations in geomagnetic indices and comparison with solar wind epsilon as seen by WIND and ACE
- Intermittency and scaling laws for wall bounded turbulence
- Scaling collapse and structure functions: Identifying self-affinity in finite length time series
- Intermittency and the passive nature of the magnitude of the magnetic field
- Non-gaussian probability distribution functions in two dimensional Magnetohydrodynamic turbulence
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- Interplay between intermittency and dissipation in collisionless plasma turbulence
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- Transport of cosmic-ray protons in intermittent heliospheric turbulence: model and simulations
- Generalized similarity in finite range solar wind magnetohydrodynamic turbulence
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