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Träfflista för sökning "WFRF:(Sergeev S. G.) srt2:(2015-2019);pers:(Nakamura T.)"

Search: WFRF:(Sergeev S. G.) > (2015-2019) > Nakamura T.

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  • Nakamura, R., et al. (author)
  • Transient, small-scale field-aligned currents in the plasma sheet boundary layer during storm time substorms
  • 2016
  • In: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 43:10, s. 4841-4849
  • Journal article (peer-reviewed)abstract
    • We report on field-aligned current observations by the four Magnetospheric Multiscale (MMS) spacecraft near the plasma sheet boundary layer (PSBL) during two major substorms on 23 June 2015. Small-scale field-aligned currents were found embedded in fluctuating PSBL flux tubes near the separatrix region. We resolve, for the first time, short-lived earthward (downward) intense field-aligned current sheets with thicknesses of a few tens of kilometers, which are well below the ion scale, on flux tubes moving equatorward/earthward during outward plasma sheet expansion. They coincide with upward field-aligned electron beams with energies of a few hundred eV. These electrons are most likely due to acceleration associated with a reconnection jet or high-energy ion beam-produced disturbances. The observations highlight coupling of multiscale processes in PSBL as a consequence of magnetotail reconnection.
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