Quantifying Shear‐induced Wave Transformations in the Solar Wind | Zendy

G. Gogoberidze | Zendy; A. D. Rogava | Zendy; Stefaan Poedts | Zendy

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Quantifying Shear‐induced Wave Transformations in the Solar Wind

Author(s) -

G. Gogoberidze,

A. D. Rogava,

Stefaan Poedts

Publication year - 2007

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/516625

Subject(s) - solar wind , physics , shear (geology) , wind shear , magnetohydrodynamic drive , computational physics , mechanics , magnetohydrodynamics , geophysics , classical mechanics , plasma , geology , meteorology , wind speed , petrology , quantum mechanics

The possibility of velocity shear-induced linear transformations of differentmagnetohydrodynamic waves in the solar wind is studied both analytically andnumerically. A quantitative analysis of the wave transformation processes forall possible plasma-$\beta$ regimes is performed. By applying the obtainedcriteria for effective wave coupling to the solar wind parameters, we show thatvelocity shear-induced linear transformations of Alfv\'en waves intomagneto-acoustic waves could effectively take place for the relativelylow-frequency Alfv\'en waves in the energy containing interval. The obtainedresults are in a good qualitative agreement with the observed features ofdensity perturbations in the solar wind.Comment: Astrophysical Journal (accepted

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