Observations and Modeling of Unstable Proton and α Particle Velocity Distributions in Sub-Alfvénic Solar Wind at Parker Solar Probe Perihelia

Observations and Modeling of Unstable Proton and α Particle Velocity Distributions in Sub-Alfvénic Solar Wind at Parker Solar Probe Perihelia

Past observations show that solar wind (SW) acceleration occurs inside the sub-Alfvénic region, reaching the local Alfvén speed at typical distances ∼10–20 solar radii ( R _s ). Recently, Parker Solar Probe (PSP) traversed regions of sub-Alfvénic SW near perihelia in encounters E8–E12 for the first...

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Bibliographic Details
Main Authors: Leon Ofman, Scott A. Boardsen, Lan K. Jian, Parisa Mostafavi, Jaye L. Verniero, Roberto Livi, Michael McManus, Ali Rahmati, Davin Larson, Michael L. Stevens
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astrophysical Journal
Subjects:
Solar wind
Heliosphere
Space plasmas
Online Access:https://doi.org/10.3847/1538-4357/acea7e

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