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Constraining Ion-Scale Heating and Spectral Energy Transfer in Observations of Plasma Turbulence.
Bowen, Trevor A; Mallet, Alfred; Bale, Stuart D; Bonnell, J W; Case, Anthony W; Chandran, Benjamin D G; Chasapis, Alexandros; Chen, Christopher H K; Duan, Die; Dudok de Wit, Thierry; Goetz, Keith; Halekas, Jasper S; Harvey, Peter R; Kasper, J C; Korreck, Kelly E; Larson, Davin; Livi, Roberto; MacDowall, Robert J; Malaspina, David M; McManus, Michael D; Pulupa, Marc; Stevens, Michael; Whittlesey, Phyllis.
Afiliación
  • Bowen TA; Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
  • Mallet A; Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
  • Bale SD; Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
  • Bonnell JW; Physics Department, University of California, Berkeley, California 94720-7300, USA.
  • Case AW; The Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom.
  • Chandran BDG; School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, United Kingdom.
  • Chasapis A; Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
  • Chen CHK; Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138, USA.
  • Duan D; Department of Physics and Astronomy, University of New Hampshire, Durham, New Hampshire 03824, USA.
  • Dudok de Wit T; Space Science Center, University of New Hampshire, Durham, New Hampshire 03824, USA.
  • Goetz K; Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, Colorado 80303, USA.
  • Halekas JS; School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, United Kingdom.
  • Harvey PR; Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
  • Kasper JC; School of Earth and Space Sciences, Peking University, Beijing 100871, China.
  • Korreck KE; LPC2E, CNRS and University of Orléans, 3 Avenue de la Recherche Scientifique, 45071 Orléans, France.
  • Larson D; School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
  • Livi R; Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242, USA.
  • MacDowall RJ; Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
  • Malaspina DM; Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138, USA.
  • McManus MD; Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA.
  • Pulupa M; Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138, USA.
  • Stevens M; Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
  • Whittlesey P; Space Sciences Laboratory, University of California, Berkeley, California 94720-7450, USA.
Phys Rev Lett ; 125(2): 025102, 2020 Jul 10.
Article en En | MEDLINE | ID: mdl-32701332
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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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos