Inferred Linear Stability of Parker Solar Probe Observations using One- and Two-Component Proton Distributions

no code implementations • 26 Jan 2021 • K. G. Klein, J. L. Verniero, B. Alterman, S. Bale, A. Case, J. C. Kasper, K. Korreck, D. Larson, E. Lichko, R. Livi, M. McManus, M. Martinović, A. Rahmati, M. Stevens, P. Whittlesey

The hot and diffuse nature of the Sun's extended atmosphere allows it to persist in non-equilibrium states for long enough that wave-particle instabilities can arise and modify the evolution of the expanding solar wind.

Solar and Stellar Astrophysics Space Physics

Solar wind energy flux observations in the inner heliosphere: First results from Parker Solar Probe

no code implementations • 8 Jan 2021 • M. Liu, K. Issautier, N. Meyer-Vernet, M. Moncuquet, M. Maksimovic, J. S. Halekas, J. Huang, L. Griton, S. Bale, J. W. Bonnell, A. W. Case, K. Goetz, P. R. Harvey, J. C. Kasper, R. J. MacDowall, D. M. Malaspina, M. Pulupa, M. L. Stevens

We investigate the solar wind energy flux in the inner heliosphere using 12-day observations around each perihelion of Encounter One (E01), Two (E02), Four (E04), and Five (E05) of Parker Solar Probe (PSP), respectively, with a minimum heliocentric distance of 27. 8 solar radii ($R_\odot{}$).

Solar and Stellar Astrophysics Space Physics