Journal articles
The Role of Alfvén Wave Dynamics on the Large-scale Properties of the Solar Wind: Comparing an MHD Simulation with Parker Solar Probe E1 Data
Victor Réville
1, 2
Marco Velli
1
Olga Panasenco
3
Anna Tenerani
4
Chen Shi
1
Samuel T. Badman
5
Stuart D. Bale
5, 6
J. C. Kasper
7
Michael L. Stevens
7
Kelly E. Korreck
7
J.W. Bonnell
5
Anthony W. Case
7
Thierry Dudok de Wit
8
Keith Goetz
Peter R. Harvey
5
Davin E Larson
5
Roberto Livi
5
David M. Malaspina
9
Robert J. Macdowall
10
Marc Pulupa
5
Phyllis Whittlesey
5
Michael L. Stevens 7
Author
Kelly E. Korreck 7
Author
J.W. Bonnell 5
Author
Anthony W. Case 7
Author
Thierry Dudok de Wit 8
Author IdHAL : thierry-dudok-de-wit ORCID : https://orcid.org/0000-0002-4401-0943
Keith Goetz
Author
Peter R. Harvey 5
Author
Davin E Larson 5
Author
Roberto Livi 5
Author
David M. Malaspina 9
Author
Robert J. Macdowall 10
Author
Marc Pulupa 5
Author
Phyllis L Whittlesey 5
Author
1
EPSS - Department of Earth, Planetary and Space Sciences [Los Angeles] (Los Angeles, CA 90095-1567 - United States)
- UCLA - University of California [Los Angeles] ( Los Angeles, Californie 90095 - United States)
- University of California (United States)
2
IRAP - Institut de recherche en astrophysique et planétologie (9 avenue Colonel Roche 31028 Toulouse - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5277 (France)
- OMP - Observatoire Midi-Pyrénées (14 avenue Edouard Belin, 31400 TOULOUSE - France)
- IRD - Institut de Recherche pour le Développement (Siège Le Sextant 44, bd de Dunkerque CS 90009 13572 Marseille cedex 02 - France)
- CNRS - Centre National de la Recherche Scientifique (France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
- CNES - Centre National d'Études Spatiales [Toulouse] (18 avenue Edouard Belin 31401 Toulouse - France)
- Météo France (France)
- UT3 - Université Toulouse III - Paul Sabatier (118 route de Narbonne - 31062 Toulouse - France)
- Université Fédérale Toulouse Midi-Pyrénées (41 Allée Jules Guesde, 31000 Toulouse - France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR5277 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
3
Advanced Heliophysics (United States)
4
University of Texas at Austin [Austin] (1 University Station Austin, Texas 78712 - United States)
5
University of California [Berkeley] (Berkeley, CA - United States)
- University of California (United States)
6
Imperial College London (South Kensington Campus, London SW7 2AZ - United Kingdom)
7
Smithsonian Astrophysical Observatory (60 Garden Street, MS 67, Cambridge, MA 02138-1516 - United States)
- Smithsonian Institution (PO Box 37012, Washington, DC 20013-7012 - United States)
8
LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (3A, Avenue de la Recherche Scientifique 45071 Orléans cedex 2 - France)
- OSUC - Observatoire des Sciences de l'Univers en région Centre : UMS3116 (Campus Géosciences, 1A rue de la Férollerie, 45071 Orléans - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - Université Paris sciences et lettres (60 rue Mazarine 75006 Paris - France)
- UO - Université d'Orléans (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- CNRS - Centre National de la Recherche Scientifique : UMS3116 (France)
- CNES - Centre National d’Études Spatiales [Paris] : UMR 7328 (Siège social : 2 place Maurice Quentin, 75039 Paris - France)
9
LASP - Laboratory for Atmospheric and Space Physics [Boulder] (1234 Innovation Drive, Boulder, CO 80303-7814 - United States)
- University of Colorado [Boulder] (Boulder, Colorado 80309 - United States)
10
GSFC - NASA Goddard Space Flight Center (Greenbelt, MD 20771 - United States)
Abstract : During Parker Solar Probe's first orbit, the solar wind plasma was observed in situ closer than ever before, the perihelion on 2018 November 6 revealing a flow that is constantly permeated by large-amplitude Alfvénic fluctuations. These include radial magnetic field reversals, or switchbacks, that seem to be a persistent feature of the young solar wind. The measurements also reveal a very strong, unexpected, azimuthal velocity component. In this work, we numerically model the solar corona during this first encounter, solving the MHD equations and accounting for Alfvén wave transport and dissipation. We find that the large-scale plasma parameters are well reproduced, allowing the computation of the solar wind sources at Probe with confidence. We try to understand the dynamical nature of the solar wind to explain both the amplitude of the observed radial magnetic field and of the azimuthal velocities.
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Journal articles
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https://hal-insu.archives-ouvertes.fr/insu-02941658
Contributor : Nathalie Pothier <>
Submitted on : Thursday, September 17, 2020 - 11:14:01 AM
Last modification on : Thursday, October 15, 2020 - 4:06:56 AM
Long-term archiving on: : Thursday, December 3, 2020 - 9:22:05 AM
Contributor : Nathalie Pothier <>
Submitted on : Thursday, September 17, 2020 - 11:14:01 AM
Last modification on : Thursday, October 15, 2020 - 4:06:56 AM
Long-term archiving on: : Thursday, December 3, 2020 - 9:22:05 AM
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- HAL Id : insu-02941658, version 1
- DOI : 10.3847/1538-4365/ab4fef
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Citation
Victor Réville, Marco Velli, Olga Panasenco, Anna Tenerani, Chen Shi, et al.. The Role of Alfvén Wave Dynamics on the Large-scale Properties of the Solar Wind: Comparing an MHD Simulation with Parker Solar Probe E1 Data. Astrophysical Journal Supplement, American Astronomical Society, 2020, Early Results from Parker Solar Probe: Ushering a New Frontier in Space Exploration, 246 (2), pp.24. ⟨10.3847/1538-4365/ab4fef⟩. ⟨insu-02941658⟩
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