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Journal Articles The Astrophysical journal letters Year : 2022

Observation of a Magnetic Switchback in the Solar Corona

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Daniele Telloni
  • Function : Author
Gary P. Zank
  • Function : Author
Marco Stangalini
  • Function : Author
Cooper Downs
  • Function : Author
Haoming Liang
  • Function : Author
Masaru Nakanotani
  • Function : Author
Vincenzo Andretta
  • Function : Author
Ester Antonucci
  • Function : Author
Luca Sorriso-Valvo
  • Function : Author
Laxman Adhikari
  • Function : Author
Lingling Zhao
  • Function : Author
Roberto Susino
  • Function : Author
Catia Grimani
  • Function : Author
Michele Fabi
  • Function : Author
Raffaella d'Amicis
  • Function : Author
Denise Perrone
  • Function : Author
Roberto Bruno
  • Function : Author
Francesco Carbone
  • Function : Author
Salvatore Mancuso
  • Function : Author
Marco Romoli
  • Function : Author
Vania Da Deppo
  • Function : Author
Silvano Fineschi
  • Function : Author
Petr Heinzel
  • Function : Author
John D. Moses
  • Function : Author
Giampiero Naletto
  • Function : Author
Gianalfredo Nicolini
  • Function : Author
Daniele Spadaro
  • Function : Author
Luca Teriaca
  • Function : Author
Federica Frassati
  • Function : Author
Giovanna Jerse
  • Function : Author
Federico Landini
  • Function : Author
Maurizio Pancrazzi
  • Function : Author
Giuliana Russano
  • Function : Author
Clementina Sasso
  • Function : Author
Ruggero Biondo
  • Function : Author
Aleksandr Burtovoi
  • Function : Author
Giuseppe E. Capuano
  • Function : Author
Chiara Casini
  • Function : Author
Marta Casti
  • Function : Author
Paolo Chioetto
  • Function : Author
Yara De Leo
  • Function : Author
Marina Giarrusso
  • Function : Author
Alessandro Liberatore
  • Function : Author
David Berghmans
  • Function : Author
Regina Aznar Cuadrado
  • Function : Author
Lakshmi P. Chitta
  • Function : Author
Louise Harra
  • Function : Author
Emil Kraaikamp
  • Function : Author
David M. Long
  • Function : Author
Sudip Mandal
  • Function : Author
Hardi Peter
  • Function : Author
Luciano Rodriguez
  • Function : Author
Udo Schühle
  • Function : Author
Conrad Schwanitz
  • Function : Author
Phil J. Smith
  • Function : Author
Cis Verbeeck
  • Function : Author
Andrei N. Zhukov
  • Function : Author

Abstract

Switchbacks are sudden, large radial deflections of the solar wind magnetic field, widely revealed in interplanetary space by the Parker Solar Probe. The switchbacks' formation mechanism and sources are still unresolved, although candidate mechanisms include Alfvénic turbulence, shear-driven Kelvin-Helmholtz instabilities, interchange reconnection, and geometrical effects related to the Parker spiral. This Letter presents observations from the Metis coronagraph on board a Solar Orbiter of a single large propagating S-shaped vortex, interpreted as the first evidence of a switchback in the solar corona. It originated above an active region with the related loop system bounded by open-field regions to the east and west. Observations, modeling, and theory provide strong arguments in favor of the interchange reconnection origin of switchbacks. Metis measurements suggest that the initiation of the switchback may also be an indicator of the origin of slow solar wind.
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Dates and versions

insu-03846981 , version 1 (10-11-2022)

Licence

Attribution - CC BY 4.0

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Daniele Telloni, Gary P. Zank, Marco Stangalini, Cooper Downs, Haoming Liang, et al.. Observation of a Magnetic Switchback in the Solar Corona. The Astrophysical journal letters, 2022, 936, ⟨10.3847/2041-8213/ac8104⟩. ⟨insu-03846981⟩
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