Quantifying shear-induced wave transformations in the solar wind

Details Quantifying shear-induced wave transformations in the solar wind Quantifying shear-induced wave transformations in the solar wind

2007-03-20

arxiv.org/abs/astro-ph/0703527v1

Astrophys.J.664:549-555,2007

Astronomy and Astrophysics

Astrophysics

Astrophysical Journal (accepted)

Scientific paper

10.1086/516625

The possibility of velocity shear-induced linear transformations of different magnetohydrodynamic waves in the solar wind is studied both analytically and numerically. A quantitative analysis of the wave transformation processes for all possible plasma-$\beta$ regimes is performed. By applying the obtained criteria for effective wave coupling to the solar wind parameters, we show that velocity shear-induced linear transformations of Alfv\'en waves into magneto-acoustic waves could effectively take place for the relatively low-frequency Alfv\'en waves in the energy containing interval. The obtained results are in a good qualitative agreement with the observed features of density perturbations in the solar wind.

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