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In situ observations of large-amplitude Alfvén waves heating and accelerating the solar wind

Stawarz, Julia E.; Kasper, Justin C.; Louarn, Philippe +16 more

After leaving the Sun’s corona, the solar wind continues to accelerate and cools, but more slowly than expected for a freely expanding adiabatic gas. Alfvén waves are perturbations of the interplanetary magnetic field that transport energy. We use in situ measurements from the Parker Solar Probe and Solar Orbiter spacecraft to investigate a stream…