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arXiv · 2501.04107

A Characteristic Signature of Magnetospheric Wave-Particle Interactions Found in the Turbulent E-region

Magnus F Ivarsen·Yukinaga Miyashita·Jean-Pierre St-Maurice·Glenn C Hussey·Brian Pitzel·Draven Galeschuk·Saif Marei·Richard B Horne·Yoshiya Kasahara·Shoya Matsuda·Satoshi Kasahara·Kunihiro Keika·Yoshizumi Miyoshi·Kazuhiro Yamamoto·Atsuki Shinbori·Devin R Huyghebaert·Ayako Matsuoka·Shoichiro Yokota·Fuminori Tsuchiya
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Abstract

Plasma waves in the magnetosphere scatter electrons, causing them to precipitate into Earth's atmosphere, imparting their temporal characteristics to diffuse auroras. In a case study of conjugate radar and satellite observations, we demonstrate a close and unprecedented association between enhanced electrostatic cyclotron harmonic wave activity in the magnetosphere and the appearance of meter-scale plasma turbulence a few seconds later in the lower ionosphere on nearby magnetic field lines. Such direct structuring of the ionosphere carries implications for our understanding of space weather.

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Magnus F Ivarsen, Yukinaga Miyashita, Jean-Pierre St-Maurice, Glenn C Hussey, Brian Pitzel, Draven Galeschuk, Saif Marei, Richard B Horne, Yoshiya Kasahara, Shoya Matsuda, Satoshi Kasahara, Kunihiro Keika, Yoshizumi Miyoshi, Kazuhiro Yamamoto, Atsuki Shinbori, Devin R Huyghebaert, Ayako Matsuoka, Shoichiro Yokota, Fuminori Tsuchiya. 2025-01-07. A Characteristic Signature of Magnetospheric Wave-Particle Interactions Found in the Turbulent E-region. https://doi.org/10.1103/physrevlett.134.145201

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