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Turbulence and Waves in the Sub-Alfvénic Solar Wind Observed by the Parker Solar Probe during Encounter 10

• Authors: L.-L. Zhao, G. P. Zank, L. Adhikari, D. Telloni, M. Stevens, J. C. Kasper, S. D. Bale, N. E. Raouafi

L.-L. Zhao et al 2022 The Astrophysical Journal Letters 934 .

• Provider: AAS Journals

Caption: Figure 2.

Time profiles of the solar wind turbulence parameters during the crossing of the sub-Alfvénic flow in E10. The two sub-Alfvénic solar wind intervals are indicated by the shaded areas as Figure 1. From top to bottom, the panels show the amplitude of the Elsässer variables z ±, amplitude of the velocity fluctuations δ v and magnetic field fluctuations in Alfvén units δ b , normalized cross-helicity σ c , normalized residual energy σ r , the angle between the mean magnetic field and mean velocity field in the spacecraft frame ﹩{\theta }_{\mathrm{VB}}^{\mathrm{sc}}﹩, the transverse P and longitudinal P magnetic fluctuation power, and the magnetic fluctuation power anisotropy P /P .