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New Insights into t...
New Insights into the Nature of Turbulence in the Earth's Magnetosheath Using Magnetospheric MultiScale Mission Data
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- Breuillard, H. (author)
- Univ Paris Sud, Sorbonne Univ, Ecole Polytech, Lab Phys Plasmas,UMR7648,CNRS, Paris, France.
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- Matteini, L. (author)
- UPMC Univ Paris 06, Univ Paris Diderot, PSL Res Univ, LESIA Observ Paris,CNRS, Meudon, France.
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- Argall, M. R. (author)
- Univ New Hampshire, Durham, NH 03824 USA.,Univ Paris Sud, Sorbonne Univ, Ecole Polytech, Lab Phys Plasmas,UMR7648,CNRS, Paris, France
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- Sahraoui, F. (author)
- Univ Paris Sud, Sorbonne Univ, Ecole Polytech, Lab Phys Plasmas,UMR7648,CNRS, Paris, France.,Southwest Res Inst, San Antonio, TX USA
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- Andriopoulou, M. (author)
- Austrian Acad Sci, Space Res Inst, Graz, Austria.
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- Le Contel, O. (author)
- Univ Paris Sud, Sorbonne Univ, Ecole Polytech, Lab Phys Plasmas,UMR7648,CNRS, Paris, France.
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- Retino, A. (author)
- Univ Paris Sud, Sorbonne Univ, Ecole Polytech, Lab Phys Plasmas,UMR7648,CNRS, Paris, France.
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- Mirioni, L. (author)
- Univ Paris Sud, Sorbonne Univ, Ecole Polytech, Lab Phys Plasmas,UMR7648,CNRS, Paris, France.
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- Huang, S. Y. (author)
- Wuhan Univ, Sch Elect & Informat, Beijing, Peoples R China.
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- Gershman, D. J. (author)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
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- Ergun, R. E. (author)
- Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
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- Wilder, F. D. (author)
- Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
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- Goodrich, K. A. (author)
- Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
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- Ahmadi, N. (author)
- Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
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- Yordanova, Emiliya (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Vaivads, Andris (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Turner, D. L. (author)
- Aerosp Corp, Space Sci Dept, El Segundo, CA 90245 USA.
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- Khotyaintsev, Yu. V. (author)
- Swedish Inst Space Phys, Uppsala, Sweden.
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- Graham, Daniel B. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Lindqvist, Per-Arne (author)
- KTH,Rymd- och plasmafysik
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- Chasapis, A. (author)
- Univ Delaware, Newark, DE USA.
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- Burch, J. L. (author)
- Southwest Res Inst, San Antonio, TX USA.,Univ Paul Sabatier, CNRS UMR5277, IRAP, Toulouse, France
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- Torbert, R. B. (author)
- Univ New Hampshire, Durham, NH 03824 USA.
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- Russell, C. T. (author)
- Univ Calif Los Angeles, Los Angeles, CA USA.
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- Magnes, W. (author)
- Austrian Acad Sci, Space Res Inst, Graz, Austria.
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Strangeway, R. J. (author)
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- Plaschke, F. (author)
- Austrian Acad Sci, Space Res Inst, Graz, Austria.
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Moore, T. E. (author)
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Giles, B. L. (author)
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Paterson, W. R. (author)
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Pollock, C. J. (author)
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- Lavraud, B. (author)
- Univ Paul Sabatier, CNRS UMR5277, IRAP, Toulouse, France.
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- Fuselier, S. A. (author)
- Southwest Res Inst, San Antonio, TX USA.
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- Cohen, I. J. (author)
- Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA.
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- Khotyaintsev, Yuri V. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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Univ Paris Sud, Sorbonne Univ, Ecole Polytech, Lab Phys Plasmas,UMR7648,CNRS, Paris, France UPMC Univ Paris 06, Univ Paris Diderot, PSL Res Univ, LESIA Observ Paris,CNRS, Meudon, France. (creator_code:org_t)
- 2018-05-30
- 2018
- English.
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In: Astrophysical Journal. - : IOP PUBLISHING LTD. - 0004-637X .- 1538-4357. ; 859:2
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
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- The Earth's magnetosheath, which is characterized by highly turbulent fluctuations, is usually divided into two regions of different properties as a function of the angle between the interplanetary magnetic field and the shock normal. In this study, we make use of high-time resolution instruments on board the Magnetospheric MultiScale spacecraft to determine and compare the properties of subsolar magnetosheath turbulence in both regions, i. e., downstream of the quasi-parallel and quasi-perpendicular bow shocks. In particular, we take advantage of the unprecedented temporal resolution of the Fast Plasma Investigation instrument to show the density fluctuations down to sub-ion scales for the first time. We show that the nature of turbulence is highly compressible down to electron scales, particularly in the quasi-parallel magnetosheath. In this region, the magnetic turbulence also shows an inertial (Kolmogorov-like) range, indicating that the fluctuations are not formed locally, in contrast with the quasi-perpendicular magnetosheath. We also show that the electromagnetic turbulence is dominated by electric fluctuations at sub-ion scales (f > 1Hz) and that magnetic and electric spectra steepen at the largest-electron scale. The latter indicates a change in the nature of turbulence at electron scales. Finally, we show that the electric fluctuations around the electron gyrofrequency are mostly parallel in the quasi-perpendicular magnetosheath, where intense whistlers are observed. This result suggests that energy dissipation, plasma heating, and acceleration might be driven by intense electrostatic parallel structures/waves, which can be linked to whistler waves.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- acceleration of particles
- Earth
- planets and satellites: magnetic fields
- plasmas
- turbulence waves
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Breuillard, H.
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Matteini, L.
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Argall, M. R.
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Sahraoui, F.
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Andriopoulou, M.
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Le Contel, O.
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show more...
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Retino, A.
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Mirioni, L.
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Huang, S. Y.
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Gershman, D. J.
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Ergun, R. E.
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Wilder, F. D.
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Goodrich, K. A.
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Ahmadi, N.
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Yordanova, Emili ...
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Vaivads, Andris
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Turner, D. L.
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Khotyaintsev, Yu ...
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Graham, Daniel B ...
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Lindqvist, Per-A ...
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Chasapis, A.
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Burch, J. L.
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Torbert, R. B.
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Russell, C. T.
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Magnes, W.
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Strangeway, R. J ...
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Plaschke, F.
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Moore, T. E.
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Giles, B. L.
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Paterson, W. R.
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Pollock, C. J.
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Lavraud, B.
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Fuselier, S. A.
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Cohen, I. J.
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Khotyaintsev, Yu ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astrophysical Jo ...
- By the university
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Royal Institute of Technology
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Uppsala University