Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe–Solar Orbiter Radial Alignment - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue The Astrophysical journal letters Année : 2021

Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe–Solar Orbiter Radial Alignment

Daniele Telloni
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Luca Sorriso-Valvo
Olga Panasenco
Marco Velli
Francesco Carbone
Gary P Zank
Roberto Bruno
Denise Perrone
Masaru Nakanotani
Chen Shi
Raffaella D’amicis
Rossana de Marco
Vamsee K Jagarlamudi
Konrad Steinvall
Laxman Adhikari
Lingling Zhao
Haoming Liang
Anna Tenerani
Stuart D Bale
Marc Pulupa
David M Malaspina
Robert J Macdowall
Keith Goetz
Peter R Harvey
Justin C Kasper
Kelly E Korreck
Davin Larson
Anthony W Case
Michael L Stevens
Roberto Livi
Christopher J Owen
Stefano Livi
Philippe Louarn
Ester Antonucci
Marco Romoli

Résumé

The first radial alignment between Parker Solar Probe and Solar Orbiter spacecraft is used to investigate the evolution of solar wind turbulence in the inner heliosphere. Assuming ballistic propagation, two 1.5 hr intervals are tentatively identified as providing measurements of the same plasma parcels traveling from 0.1 to 1 au. Using magnetic field measurements from both spacecraft, the properties of turbulence in the two intervals are assessed. Magnetic spectral density, flatness, and high-order moment scaling laws are calculated. The Hilbert-Huang transform is additionally used to mitigate short sample and poor stationarity effects. Results show that the plasma evolves from a highly Alfvénic, less-developed turbulence state near the Sun, to fully developed and intermittent turbulence at 1 au. These observations provide strong evidence for the radial evolution of solar wind turbulence.
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Dates et versions

hal-03453645 , version 1 (28-11-2021)

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Daniele Telloni, Luca Sorriso-Valvo, Lloyd D Woodham, Olga Panasenco, Marco Velli, et al.. Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe–Solar Orbiter Radial Alignment. The Astrophysical journal letters, 2021, 912 (2), pp.L21. ⟨10.3847/2041-8213/abf7d1⟩. ⟨hal-03453645⟩
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