Figure 1 from Sub-Alfvénic Solar Wind Observed by the Parker Solar Probe: Characterization of Turbulence, Anisotropy, Intermittency, and Switchback

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Sub-Alfvénic Solar Wind Observed by the Parker Solar Probe: Characterization of Turbulence, Anisotropy, Intermittency, and Switchback

Authors: R. Bandyopadhyay, W. H. Matthaeus, D. J. McComas, R. Chhiber, A. V. Usmanov, J. Huang, R. Livi, D. E. Larson, J. C. Kasper, A. W. Case, M. Stevens, P. Whittlesey, O. M. Romeo, S. D. Bale, J. W. Bonnell, T. Dudok de Wit, K. Goetz, P. R. Harvey, R. J. MacDowall, D. M. Malaspina, and M. Pulupa

2022 The Astrophysical Journal Letters 926 L1.

Provider: AAS Journals

Caption: Figure 1.

An overview of plasma parameters surrounding the sub-Alfvénic intervals observed by PSP near its eighth (left) and ninth (right) perihelion. The panels from top show Alfvén Mach number M_A = V_R/V_A where V_A is the Alfvén speed (see text), radial component of solar wind proton velocity V_R, electron number density N_e, radial component and magnitude of magnetic field B, and heliocentric distance in units of solar radii. A cyan line is drawn at M_A = 1 in the top panels for visual ease. The dashed red lines indicate the sub-Alfvénic periods.

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