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The Long Period of 3He-rich Solar Energetic Particles Measured by Solar Orbiter 2020 November 17--23
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  • Radoslav Bucik,
  • Glenn Mason,
  • Raul Gomez-Herrero,
  • David Lario,
  • Laura Balmaceda,
  • Nariaki Nitta,
  • Vratislav Krupar,
  • Nina Dresing,
  • George Ho,
  • Robert Allen,
  • Fernando Carcaboso-Morales,
  • Javier Rodriguez-Pacheco,
  • Frederic Schuller,
  • Alexander Warmuth,
  • Robert Wimmer-Schweingruber,
  • Johan Freiherr von Forstner,
  • G Andrews,
  • Lars Berger,
  • Ignacio Cernuda,
  • Francisco Espinosa Lara,
  • W. Lees,
  • Cesar Martin-Garcia,
  • Daniel Pacheco,
  • Manuel Prieto,
  • Sebastian Sanchez Prieto,
  • Charles Schlemm,
  • Helmut Seifert,
  • Kush Tyagi,
  • Milan Maksimovic,
  • Antonio Vecchio,
  • Alexander Kollhoff,
  • Patrick Kühl,
  • Zigong Xu,
  • Sandra Eldrum
Radoslav Bucik
Southwest Research Institute

Corresponding Author:radoslav.bucik@swri.org

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Glenn Mason
Johns Hopkins University Applied Physics Laboratory
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Raul Gomez-Herrero
University of Alcalá
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David Lario
NASA Goddard Space Flight Center
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Laura Balmaceda
George Mason University Fairfax
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Nariaki Nitta
Lockheed Martin Advanced Technology Center
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Vratislav Krupar
University of Maryland Baltimore County
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Nina Dresing
University of Turku
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George Ho
Johns Hopkins University Applied Physics Laboratory
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Robert Allen
Johns Hopkins University Applied Physics Laboratory
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Fernando Carcaboso-Morales
University of Alcalá
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Javier Rodriguez-Pacheco
University of Alcalá
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Frederic Schuller
Leibniz Institute for Astrophysics Potsdam
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Alexander Warmuth
Leibniz Institute for Astrophysics Potsdam
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Robert Wimmer-Schweingruber
University of Kiel
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Johan Freiherr von Forstner
University of Kiel
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G Andrews
Johns Hopkins University Applied Physics Laboratory
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Lars Berger
University of Kiel
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Ignacio Cernuda
University of Alcalá
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Francisco Espinosa Lara
University of Alcalá
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W. Lees
Johns Hopkins University Applied Physics Laboratory
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Cesar Martin-Garcia
University of Kiel
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Daniel Pacheco
University of Kiel
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Manuel Prieto
University of Alcalá
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Sebastian Sanchez Prieto
University of Alcalá
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Charles Schlemm
Johns Hopkins University Applied Physics Laboratory
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Helmut Seifert
Johns Hopkins University Applied Physics Laboratory
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Kush Tyagi
University of Colorado at Boulder
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Milan Maksimovic
LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris
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Antonio Vecchio
LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris
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Alexander Kollhoff
University of Kiel
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Patrick Kühl
University of Kiel
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Zigong Xu
University of Kiel
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Sandra Eldrum
University of Kiel
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Abstract

We report observations of a relatively long period of 3He-rich solar energetic particles (SEPs) measured by Solar Orbiter. The period consists of several well-resolved ion injections. The high-resolution STEREO-A imaging observations reveal that the injections coincide with extreme ultraviolet jets and brightenings near the east limb, not far from the nominal magnetic connection of Solar Orbiter. The jets originated in two adjacent, large, and complex active regions, as observed by the Solar Dynamics Observatory when the regions rotated into the Earth’s view. It appears that the sustained ion injections were related to the complex configuration of the sunspot group and the long period of 3He-rich SEPs to the longitudinal extent covered by the group during the analyzed time period.