on the role of neutral flow in field-aligned currents

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ID: 129298
2018
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Abstract
In this brief note we explore the role of the neutral atmosphere in magnetosphere–ionosphere coupling. We analyze momentum balance in the ion rest frame to form hypotheses regarding the role of neutral momentum in the lower ionosphere during geomagnetic storms. Neutral momentum that appears in the ion rest frame is likely the result of momentum imparted to ionospheric ions by solar wind flow and the resultant magnetospheric dynamics. The resulting ion-neutral collisions lead to the existence of an electric field. Horizontal electron flow balances the momentum supplied by this electric field. We suggest a possible role played by the neutral atmosphere in generating field-aligned currents due to local auroral heating. Our physical interpretation suggests that thermospheric neutral dynamics plays a complementary role to the high-latitude field-aligned currents and electric fields resulting from magnetospheric dynamics.
Reference Key
mannucci2018annaleson Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;A. J. Mannucci;O. P. Verkhoglyadova;X. Meng;R. McGranaghan;R. McGranaghan
Journal journal of food measurement and characterization
Year 2018
DOI
10.5194/angeo-36-53-2018
URL
https://www.ann-geophys.net/36/53/2018/angeo-36-53-2018.pdf
Keywords
cosmic physics sciencephysicsgeophysics

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