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Turbulence-Generated Proton-Scale Structures In The Terrestrial Magnetosheath
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- Voeroes, Zoltan (författare)
- Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria.;Eotvos Lorand Univ, Dept Geophys & Space Sci, Budapest, Hungary.
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- Yordanova, Emiliya (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Echim, Marius M. (författare)
- Belgian Inst Space Aeron, Brussels, Belgium.;Inst Space Sci, Magurele, Romania.
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- Consolini, Giuseppe (författare)
- INAF Ist Astrofis & Planetol Spaziali, Rome, Italy.
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- Narita, Yasuhito (författare)
- Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria.
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Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria;Eotvos Lorand Univ, Dept Geophys & Space Sci, Budapest, Hungary. Institutet för rymdfysik, Uppsalaavdelningen (creator_code:org_t)
- 2016
- 2016
- Engelska.
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Ingår i: Astrophysical Journal Letters. - 2041-8205 .- 2041-8213. ; 819:1
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- Recent results of numerical magnetohydrodynamic simulations suggest that in collisionless space plasmas, turbulence can spontaneously generate thin current sheets. These coherent structures can partially explain the intermittency and the non-homogenous distribution of localized plasma heating in turbulence. In this Letter, Cluster multi-point observations are used to investigate the distribution of magnetic field discontinuities and the associated small-scale current sheets in the terrestrial magnetosheath downstream of a quasi-parallel bow shock. It is shown experimentally, for the first time, that the strongest turbulence-generated current sheets occupy the long tails of probability distribution functions associated with extremal values of magnetic field partial derivatives. During the analyzed one-hour time interval, about a hundred strong discontinuities, possibly proton-scale current sheets, were observed.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- magnetic fields
- magnetic reconnection
- plasmas
- turbulence
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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