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Linking Small-scale Solar Wind Properties with Large-scale Coronal Source Regions through Joint Parker Solar Probe-Metis/Solar Orbiter Observations

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posted on 2022-11-01, 09:09 authored by Daniele Telloni, Gary P Zank, Luca Sorriso-Valvo, Raffaella D'Amicis, Olga Panasenco, Roberto Susino, Roberto Bruno, Denise Perrone, Laxman Adhikari, Haoming Liang, Masaru Nakanotani, Lingling Zhao, Lina Z Hadid, Beatriz Sanchez-Cano, Daniel Verscharen, Marco Velli, Catia Grimani, Raffaele Marino, Francesco Carbone, Salvatore Mancuso, Ruggero Biondo, Paolo Pagano, Fabio Reale, Stuart D Bale, Justin C Kasper, Anthony W Case, Thierry Dudok de Wit, Keith Goetz, Peter R Harvey, Kelly E Korreck, Davin Larson, Roberto Livi, Robert J MacDowall, David M Malaspina, Marc Pulupa, Michael L Stevens, Phyllis Whittlesey, Marco Romoli, Vincenzo Andretta, Vania Da Deppo, Silvano Fineschi, Petr Heinzel, John D Moses, Giampiero Naletto, Gianalfredo Nicolini, Daniele Spadaro, Marco Stangalini, Luca Teriaca, Gerardo Capobianco, Giuseppe E Capuano, Chiara Casini, Marta Casti, Paolo Chioetto, Alain J Corso, Yara De Leo, Michele Fabi, Federica Frassati, Fabio Frassetto, Silvio Giordano, Salvo L Guglielmino, Giovanna Jerse, Federico Landini, Alessandro Liberatore, Enrico Magli, Giuseppe Massone, Mauro Messerotti, Maurizio Pancrazzi, Maria G Pelizzo, Paolo Romano, Clementina Sasso, Udo Schuhle, Alessandra Slemer, Thomas Straus, Michela Uslenghi, Cosimo A Volpicelli, Luca Zangrilli, Paola Zuppella, Lucia Abbo, Frederic Auchere, Regina Aznar Cuadrado, Arkadiusz Berlicki, Angela Ciaravella, Philippe Lamy, Alessandro Lanzafame, Marco Malvezzi, Piergiorgio Nicolosi, Giuseppe Nistico, Hardi Peter, Sami K Solanki, Leonard Strachan, Kanaris Tsinganos, Rita Ventura, Jean-Claude Vial, Joachim Woch, Gaetano Zimbardo

The solar wind measured in situ by Parker Solar Probe in the very inner heliosphere is studied in combination with the remote-sensing observation of the coronal source region provided by the METIS coronagraph aboard Solar Orbiter. The coronal outflows observed near the ecliptic by Metis on 2021 January 17 at 16:30 UT, between 3.5 and 6.3 R ⊙ above the eastern solar limb, can be associated with the streams sampled by PSP at 0.11 and 0.26 au from the Sun, in two time intervals almost 5 days apart. The two plasma flows come from two distinct source regions, characterized by different magnetic field polarity and intensity at the coronal base. It follows that both the global and local properties of the two streams are different. Specifically, the solar wind emanating from the stronger magnetic field region has a lower bulk flux density, as expected, and is in a state of well-developed Alfvénic turbulence, with low intermittency. This is interpreted in terms of slab turbulence in the context of nearly incompressible magnetohydrodynamics. Conversely, the highly intermittent and poorly developed turbulent behavior of the solar wind from the weaker magnetic field region is presumably due to large magnetic deflections most likely attributed to the presence of switchbacks of interchange reconnection origin.

History

Author affiliation

Department of Physics and Astronomy, University of Leicester

Version

  • VoR (Version of Record)

Published in

Astrophysical Journal

Volume

935

Issue

2

Publisher

IOP Publishing Ltd

issn

0004-637X

eissn

1538-4357

Copyright date

2022

Available date

2022-11-01

Language

English

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