Observation of a Magnetic Switchback in the Solar Corona-Reference-Cited by-同舟云学术

Observation of a Magnetic Switchback in the Solar Corona

Published:2022-09-01 Issue:2 Volume:936 Page:L25
ISSN:2041-8205
Container-title:The Astrophysical Journal Letters
language:
Short-container-title:ApJL

Author:

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

Abstract

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.

Funder

Agenzia Spaziale Italiana

Publisher

American Astronomical Society

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://iopscience.iop.org/article/10.3847/2041-8213/ac8104/pdf

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