Intermittent nature of solar wind turbulence near the Earth's bow shock: Phase coherence and non-Gaussianity

Details Intermittent nature of solar wind turbulence near the Earth's bow shock: Phase coherence and non-Gaussianity Intermittent nature of solar wind turbulence near the Earth's bow shock: Phase coherence and non-Gaussianity

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phrve..75d6401k&link_type=abstract

Physical Review E, vol. 75, Issue 4, id. 046401

Mathematics

Probability

13

Waves, Oscillations, And Instabilities In Plasmas And Intense Beams, Magnetohydrodynamics And Plasmas, Turbulent Flows

Scientific paper

The link between phase coherence and non-Gaussian statistics is investigated using magnetic field data observed in the solar wind turbulence near the Earth’s bow shock. The phase coherence index Cϕ , which characterizes the degree of phase correlation (i.e., nonlinear wave-wave interactions) among scales, displays a behavior similar to kurtosis and reflects a departure from Gaussianity in the probability density functions of magnetic field fluctuations. This demonstrates that nonlinear interactions among scales are the origin of intermittency in the magnetic field turbulence.

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