Exploring the Solar Wind from Its Source on the Corona into the Inner Heliosphere during the First Solar Orbiter–Parker Solar Probe Quadrature - Archive ouverte HAL Access content directly
Journal Articles The Astrophysical journal letters Year : 2021

Exploring the Solar Wind from Its Source on the Corona into the Inner Heliosphere during the First Solar Orbiter–Parker Solar Probe Quadrature

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Daniele Telloni
Vincenzo Andretta
Ester Antonucci
Alessandro Bemporad
Giuseppe Capuano
Silvano Fineschi
Silvio Giordano
Shadia Habbal
Denise Perrone
Luca Sorriso-Valvo
Daniele Spadaro
Roberto Susino
Lloyd Woodham
Gary Zank
Marco Romoli
Stuart Bale
Justin Kasper
Frédéric Auchère
Roberto Bruno
Gerardo Capobianco
Anthony Case
Chiara Casini
Marta Casti
Paolo Chioetto
Alain Corso
Vania da Deppo
Yara de Leo
Federica Frassati
Fabio Frassetto
Keith Goetz
Salvo Guglielmino
Peter Harvey
Petr Heinzel
Giovanna Jerse
Kelly Korreck
Federico Landini
Davin Larson
Alessandro Liberatore
Roberto Livi
Robert Macdowall
Enrico Magli
David Malaspina
Giuseppe Massone
Mauro Messerotti
John Moses
Giampiero Naletto
Gianalfredo Nicolini
Giuseppe Nisticò
Olga Panasenco
Maurizio Pancrazzi
Maria Pelizzo
Marc Pulupa
Fabio Reale
Paolo Romano
Clementina Sasso
Udo Schühle
Marco Stangalini
Michael Stevens
Leonard Strachan
Thomas Straus
Luca Teriaca
Michela Uslenghi
Marco Velli
Daniel Verscharen
Cosimo Volpicelli
Phyllis Whittlesey
Luca Zangrilli
Gaetano Zimbardo
Paola Zuppella

Abstract

This Letter addresses thefirst Solar Orbiter(SO)–Parker Solar Probe(PSP)quadrature, occurring on 2021 January18 to investigate the evolution of solar wind from the extended corona to the inner heliosphere. Assuming ballisticpropagation, the same plasma volume observed remotely in the corona at altitudes between 3.5 and 6.3 solar radiiabove the solar limb with the Metis coronagraph on SO can be tracked to PSP, orbiting at 0.1 au, thus allowing thelocal properties of the solar wind to be linked to the coronal source region from where it originated. Thanks to theclose approach of PSP to the Sun and the simultaneous Metis observation of the solar corona, theflow-alignedmagneticfield and the bulk kinetic energyflux density can be empirically inferred along the coronal current sheetwith an unprecedented accuracy, allowing in particular estimation of the Alfvén radius at 8.7 solar radii during thetime of this event. This is thus the veryfirst study of the same solar wind plasma as it expands from the sub-Alfvénic solar corona to just above the Alfvén surface

Dates and versions

insu-03440357 , version 1 (22-11-2021)

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Cite

Daniele Telloni, Vincenzo Andretta, Ester Antonucci, Alessandro Bemporad, Giuseppe Capuano, et al.. Exploring the Solar Wind from Its Source on the Corona into the Inner Heliosphere during the First Solar Orbiter–Parker Solar Probe Quadrature. The Astrophysical journal letters, 2021, 920 (1), pp.L14. ⟨10.3847/2041-8213/ac282f⟩. ⟨insu-03440357⟩
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