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Self-consistent Simulations of Alfvén Wave Driven Winds from the Sun and Stars

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We review our recent results of Alfvén wave-driven winds. First, we present the result of self-consistent 1D MHD simulations for solar winds from the photosphere to interplanetary region. Here, we emphasize the importance of the reflection of Alfvén waves in the density stratified corona and solar winds. We also introduce the recent Hinode observation that might detect the reflection signature of transverse (Alfvénic) waves by Fujimura and Tsuneta (Astrophys. J. 702:1443, 2009). Then, we show the results of Alfvén wave-driven winds from red giant stars. As a star evolves to the red giant branch, the properties of stellar winds drastically change from steady coronal winds to intermittent chromospheric winds. We also discuss how the stellar evolution affects the wave reflection in the stellar atmosphere and similarities and differences of accretion disk winds by MHD turbulence.

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Correspondence to Takeru K. Suzuki.

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Suzuki, T.K. Self-consistent Simulations of Alfvén Wave Driven Winds from the Sun and Stars. Space Sci Rev 158, 339–363 (2011). https://doi.org/10.1007/s11214-010-9709-0

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  • DOI: https://doi.org/10.1007/s11214-010-9709-0

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