Experimental evidence of phase coherence of magnetohydrodynamic turbulence in the solar wind: GEOTAIL satellite data

D. Koga; A. C.L. Chian; T. Hada; E. L. Rempel

doi:10.1098/rsta.2007.2102

Experimental evidence of phase coherence of magnetohydrodynamic turbulence in the solar wind: GEOTAIL satellite data

D. Koga, A. C.L. Chian, T. Hada, E. L. Rempel

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9 Citations (Scopus)

Abstract

Magnetohydrodynamic (MHD) turbulence is commonly observed in the solar wind. Nonlinear interactions among MHD waves are likely to produce finite correlation of the wave phases. For discussions of various transport processes of energetic particles, it is fundamentally important to determine whether the wave phases are randomly distributed (as assumed in the quasi-linear theory) or have a finite coherence. Using a method based on the surrogate data technique, we analysed the GEOTAIL magnetic field data to evaluate the phase coherence in MHD turbulence in the Earth's foreshock region. The results demonstrate the existence of finite phase correlation, indicating that nonlinear wave-wave interactions are in progress.

Original language	English
Pages (from-to)	447-457
Number of pages	11
Journal	Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume	366
Issue number	1864
DOIs	https://doi.org/10.1098/rsta.2007.2102
Publication status	Published - Feb 13 2008

All Science Journal Classification (ASJC) codes

Mathematics(all)
Engineering(all)
Physics and Astronomy(all)

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10.1098/rsta.2007.2102

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Experimental evidence of phase coherence of magnetohydrodynamic turbulence in the solar wind: GEOTAIL satellite data. / Koga, D.; Chian, A. C.L.; Hada, T. et al.
In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 366, No. 1864, 13.02.2008, p. 447-457.

Research output: Contribution to journal › Article › peer-review

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Experimental evidence of phase coherence of magnetohydrodynamic turbulence in the solar wind: GEOTAIL satellite data

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