Journal articles
Constraining Ion-Scale Heating and Spectral Energy Transfer in Observations of Plasma Turbulence
T.A. Bowen
1
A. Mallet
1
S.D. Bale
1
J.W. Bonnell
1
A.W. Case
2
B.D.G. Chandran
3
A. Chasapis
4
C.H.K. Chen
5
D. Duan
1
Thierry Dudok de Wit
6
K. Goetz
J.S. Halekas
P.R. Harvey
J.C. Kasper
2
Kelly Korreck
D. Larson
1
R. Livi
1
R.J Macdowall
7
D.M. Malaspina
M.D. Mcmanus
1
M. Pulupa
1
M. Stevens
P. Whittlesey
1
D. Duan 1
Author
Thierry Dudok de Wit 6
Author IdHAL : thierry-dudok-de-wit ORCID : https://orcid.org/0000-0002-4401-0943
K. Goetz
Author
J.S. Halekas
Author
1
SSL - Space Sciences Laboratory [Berkeley] (7 Gauss Way, Berkeley, CA 94720 - United States)
- University of California [Berkeley] (Berkeley, CA - United States)
- University of California (United States)
2
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)
3
UNH - University of New Hampshire (Durham, NH 03824 - United States)
4
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)
5
QMUL - Queen Mary University of London (Mile End Road, London E1 4NS - United Kingdom)
6
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)
7
GSFC Solar System Exploration Division (Greenbelt, Maryland, USA - United States)
- GSFC - NASA Goddard Space Flight Center (Greenbelt, MD 20771 - United States)
Abstract : We perform a statistical study of the turbulent power spectrum at inertial and kinetic scales observed during the first perihelion encounter of the Parker Solar Probe. We find that often there is an extremely steep scaling range of the power spectrum just above the ion-kinetic scales, similar to prior observations at 1 A.U., with a power-law index of around −4. Based on our measurements, we demonstrate that either a significant (>50%) fraction of the total turbulent energy flux is dissipated in this range of scales, or the characteristic nonlinear interaction time of the turbulence decreases dramatically from the expectation based solely on the dispersive nature of nonlinearly interacting kinetic Alfvén waves.
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https://hal-insu.archives-ouvertes.fr/insu-02923463
Contributor : Nathalie Pothier <>
Submitted on : Thursday, August 27, 2020 - 11:56:14 AM
Last modification on : Wednesday, October 14, 2020 - 3:59:47 AM
Long-term archiving on: : Saturday, November 28, 2020 - 12:28:56 PM
Contributor : Nathalie Pothier <>
Submitted on : Thursday, August 27, 2020 - 11:56:14 AM
Last modification on : Wednesday, October 14, 2020 - 3:59:47 AM
Long-term archiving on: : Saturday, November 28, 2020 - 12:28:56 PM
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- HAL Id : insu-02923463, version 1
- DOI : 10.1103/PhysRevLett.125.025102
Citation
T.A. Bowen, A. Mallet, S.D. Bale, J.W. Bonnell, A.W. Case, et al.. Constraining Ion-Scale Heating and Spectral Energy Transfer in Observations of Plasma Turbulence. Physical Review Letters, American Physical Society, 2020, 125 (2), 8 p. ⟨10.1103/PhysRevLett.125.025102⟩. ⟨insu-02923463⟩
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