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Current Sheets with Multicomponent Plasma in Magnetospheres of Planets of the Solar System

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Abstract

A self-consistent hybrid model of a thin current sheet (TCS) with a thickness of the order of several ion gyroradii is proposed that takes into account the multicomponent nature of collisionless space plasma. Several plasma components can be present in the tails of the magnetospheres of terrestrial planets (for example, the Earth, Mercury, Mars, and Venus). Variations in the current sheet (CS) structure in magnetospheric plasma in the presence of heavy oxygen ions with different characteristics are analyzed. It is shown that high relative concentrations of oxygen ions, as well as their relatively high temperatures and drift velocities, lead to significant thickening of CS and the formation of an additional embedded scale. In this case, on the profiles of the main characteristics—current density and magnetic field—symmetric breaks appear, which correspond to a sharp change in the gradients of variation in values. A comparison is performed and a qualitative agreement is shown between the simulation results and observational data in the tail of the Martian magnetosphere.

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Authors and Affiliations

  1. Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119991, Moscow, Russia

    V. I. Domrin & Kh. V. Malova

  2. Space Research Institute, Russian Academy of Sciences, 117997, Moscow, Russia

    Kh. V. Malova, V. Yu. Popov, E. E. Grigorenko & A. A. Petrukovich

  3. Faculty of Physics, Moscow State University, 119991, Moscow, Russia

    V. Yu. Popov

  4. National Research University Higher School of Economics, 101000, Moscow, Russia

    V. Yu. Popov

Authors
  1. V. I. Domrin
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  2. Kh. V. Malova
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  3. V. Yu. Popov
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  4. E. E. Grigorenko
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  5. A. A. Petrukovich
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Correspondence to Kh. V. Malova.

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Translated by N. Topchiev

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Domrin, V.I., Malova, K.V., Popov, V.Y. et al. Current Sheets with Multicomponent Plasma in Magnetospheres of Planets of the Solar System. Cosmic Res 58, 426–435 (2020). https://doi.org/10.1134/S0010952520060039

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