Constraining Ion-Scale Heating and Spectral Energy Transfer in Observations of Plasma Turbulence.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
10 Jul 2020
Historique:
revised: 11 05 2020
received: 14 01 2020
accepted: 22 05 2020
entrez: 24 7 2020
pubmed: 24 7 2020
medline: 24 7 2020
Statut: ppublish

Résumé

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.

Identifiants

DOI: 10.1103/PhysRevLett.125.025102 PMID: 32701332
pubmed: 32701332
doi: 10.1103/PhysRevLett.125.025102
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

025102

Auteurs

Trevor A Bowen (TA)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.

Alfred Mallet (A)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.

Stuart D Bale (SD)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
Physics Department, University of California, Berkeley, California 94720-7300, USA.
The Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom.
School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, United Kingdom.

J W Bonnell (JW)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.

Anthony W Case (AW)

Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138, USA.

Benjamin D G Chandran (BDG)

Department of Physics and Astronomy, University of New Hampshire, Durham, New Hampshire 03824, USA.
Space Science Center, University of New Hampshire, Durham, New Hampshire 03824, USA.

Alexandros Chasapis (A)

Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, Colorado 80303, USA.

Christopher H K Chen (CHK)

School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, United Kingdom.

Die Duan (D)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
School of Earth and Space Sciences, Peking University, Beijing 100871, China.

Thierry Dudok de Wit (T)

LPC2E, CNRS and University of Orléans, 3 Avenue de la Recherche Scientifique, 45071 Orléans, France.

Keith Goetz (K)

School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.

Jasper S Halekas (JS)

Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242, USA.

Peter R Harvey (PR)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.

J C Kasper (JC)

Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138, USA.
Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA.

Kelly E Korreck (KE)

Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138, USA.

Davin Larson (D)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.

Roberto Livi (R)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.

Robert J MacDowall (RJ)

Solar System Exploration Division, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA.

David M Malaspina (DM)

Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, Colorado 80303, USA.
Astrophysical and Planetary Sciences Department, University of Colorado, Boulder, Colorado, USA.

Michael D McManus (MD)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
Physics Department, University of California, Berkeley, California 94720-7300, USA.

Marc Pulupa (M)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.

Michael Stevens (M)

Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138, USA.

Phyllis Whittlesey (P)

Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.

Classifications MeSH