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Dayside Pc2 waves associated with flux transfer events in a 3D hybrid-Vlasov simulation
  • +14
  • Fasil Tesema Kebede,
  • Minna Palmroth,
  • Lucile Turc,
  • Hongyang Zhou,
  • Giulia Cozzani,
  • Markku Alho,
  • Yann Pfau-Kempf,
  • Konstantinos Horaites,
  • Ivan Zaitsev,
  • Maxime Grandin,
  • Markus Battarbee,
  • Urs Ganse,
  • Abiyot Workayehu,
  • Jonas Emil Suni,
  • Konstantinos Papadakis,
  • Maxime Dubart,
  • Vertti A Tarvus
Fasil Tesema Kebede
University of Helsinki

Corresponding Author:[email protected]

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Minna Palmroth
University of Helsinki
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Lucile Turc
University of Helsinki
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Hongyang Zhou
University of Helsinki
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Giulia Cozzani
University of Helsinki
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Markku Alho
University of Helsinki
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Yann Pfau-Kempf
University of Helsinki
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Konstantinos Horaites
University of Helsinki
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Ivan Zaitsev
University of Helsinki
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Maxime Grandin
University of Helsinki
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Markus Battarbee
University of Helsinki
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Urs Ganse
University of Helsinki
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Abiyot Workayehu
University of Helsinki
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Jonas Emil Suni
University of Helsinki
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Konstantinos Papadakis
University of Helsinki
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Maxime Dubart
University of Helsinki
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Vertti A Tarvus
University of Helsinki
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Abstract

Flux transfer events (FTEs) are transient magnetic flux ropes at Earth’s dayside magnetopause formed due to magnetic reconnection. As they move across the magnetopause surface, they can generate disturbances in the ultra-low frequency (ULF) range, which then propagate into the magnetosphere. This study provides evidence of ULF waves in the Pc2 wave frequency range caused by FTEs during dayside reconnection using a global 3D hybrid-Vlasov simulation (Vlasiator). These waves resulted from FTE formation and propagation at the magnetopause are particularly associated with large, rapidly moving FTEs. The wave power is stronger in the morning than afternoon, showing local time asymmetry. In the pre and postnoon equatorial regions, significant poloidal and toroidal components are present alongside the compressional component. The noon sector, with fewer FTEs, has lower wave power and limited magnetospheric propagation.
02 Nov 2023Submitted to ESS Open Archive
03 Nov 2023Published in ESS Open Archive