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Energetic Ion Dynamics Near the Cusp Region of Mercury

Jang, E. ; Zhao, J.-T. ; Yue, C. ; Zong, Q.-G. ; Liu, Y. ; Liu, Z.-Y.

The Astrophysical journal, 2020-03, Vol.892 (1), p.10 [Periódico revisado por pares]

Philadelphia: The American Astronomical Society

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Título:
Energetic Ion Dynamics Near the Cusp Region of Mercury
Autor: Jang, E. ; Zhao, J.-T. ; Yue, C. ; Zong, Q.-G. ; Liu, Y. ; Liu, Z.-Y.
Assuntos: Aerospace environments ; Astrophysics ; Computer simulation ; Cusps ; Earth magnetosphere ; Energetic particles ; Geochemistry ; Ion dynamics ; Magnetic fields ; Mercury ; Mercury (planet) ; Mercury surface ; Pitch (inclination) ; Planetary magnetosphere ; Planetary magnetospheres ; Plasma physics ; Protons ; Solar activity ; Solar magnetic field ; Space plasmas
É parte de: The Astrophysical journal, 2020-03, Vol.892 (1), p.10
Notas: The Sun and the Heliosphere
AAS20736
Descrição: Energetic ions in Mercury's magnetosphere are very dynamic, similar to those in the magnetosphere of Earth. In this study, we present two energetic proton observations by MErcury Surface, Space ENvironment, GEochemistry and Ranging near the cusp region of Mercury. For one case, we have observed a large flux of energetic protons while the other case has almost no flux, indicating that the near-cusp region may trap energetic particles under particular conditions. In order to understand under what conditions the near-cusp region of Mercury could trap energetic particles, we have used test particle simulations to trace the trajectories of single particles of different energies and pitch angles with a magnetic field model, KT17, that could closely represent the observed in situ magnetic field. Under different magnetic field geometries, the motions of single particles with various energies and pitch angles are different. The test particles can be trapped around the cusp region when the solar disturbance activity that generates the magnetic field local minimum near the cusp region is strong, while the particles cannot be trapped and escape along the magnetic field through the dawnside cusp when there is little solar activity.
Editor: Philadelphia: The American Astronomical Society
Idioma: Inglês

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Energetic Ion Dynamics Near the Cusp Region of Mercury

Jang, E. ; Zhao, J.-T. ; Yue, C. ; Zong, Q.-G. ; Liu, Y. ; Liu, Z.-Y.

Philadelphia: The American Astronomical Society

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