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Current sheet flapping in the near-Earth magnetotail: peculiarities of propagation and parallel currents
Nakamura, Rumi; Petrukovich, Anatoly A.; Artemyev, Anton V. +1 more
We consider series of tilted current sheet crossings, corresponding to flapping waves in the near-Earth magnetotail. We analyse Cluster observations from 2005 to 2009, when spacecraft visited the magnetotail neutral plane near X ∈ [ - 17, - 8], Y ∈ [ - 16, - 2] RE (in the GSM system). Large separation of spacecraft allows us …
Wave-particle resonance condition test for ion-kinetic waves in the solar wind
Glassmeier, K. -H.; Marsch, E.; Narita, Y. +3 more
Conditions for the Landau and cyclotron resonances are tested for 543 waves (identified as local peaks in the energy spectra) in the magnetic field fluctuations of the solar wind measured by the Cluster spacecraft on a tetrahedral scale of 100 km. The resonance parameters are evaluated using the frequencies in the plasma rest frame, the parallel c…
Inverse scattering problem in turbulent magnetic fluctuations
Narita, Yasuhito; Baumjohann, Wolfgang; Treumann, Rudolf A.
We apply a particular form of the inverse scattering theory to turbulent magnetic fluctuations in a plasma. In the present note we develop the theory, formulate the magnetic fluctuation problem in terms of its electrodynamic turbulent response function, and reduce it to the solution of a special form of the famous Gelfand-Levitan-Marchenko equatio…
Critical pitch angle for electron acceleration in a collisionless shock layer
Narita, Y.; Motschmann, U.; Comişel, H.
Collisionless shock waves in space and astrophysical plasmas can accelerate electrons along the shock layer by an electrostatic potential, and scatter or reflect electrons back to the upstream region by the amplified magnetic field or turbulent fluctuations. The notion of the critical pitch angle is introduced for non-adiabatic electron accelerati…