Zhang, Z.; He, F.; Zhang, X.-X.; Liang, G.; Wang, X.; Wei, Y. Solar Wind Charge-Exchange X-ray Emissions from the O5+ Ions in the Earth’s Magnetosheath. Remote Sens.2024, 16, 1480.
Zhang, Z.; He, F.; Zhang, X.-X.; Liang, G.; Wang, X.; Wei, Y. Solar Wind Charge-Exchange X-ray Emissions from the O5+ Ions in the Earth’s Magnetosheath. Remote Sens. 2024, 16, 1480.
Zhang, Z.; He, F.; Zhang, X.-X.; Liang, G.; Wang, X.; Wei, Y. Solar Wind Charge-Exchange X-ray Emissions from the O5+ Ions in the Earth’s Magnetosheath. Remote Sens.2024, 16, 1480.
Zhang, Z.; He, F.; Zhang, X.-X.; Liang, G.; Wang, X.; Wei, Y. Solar Wind Charge-Exchange X-ray Emissions from the O5+ Ions in the Earth’s Magnetosheath. Remote Sens. 2024, 16, 1480.
Abstract
The spectra and global distributions of the X-ray emissions generated by the solar wind charge-exchange (SWCX) process in the terrestrial magnetosheath are investigated based on a global hybrid model and a global geocoronal hydrogen model. The solar wind O6+ ions which are the primary charge state for oxygen ions in solar wind are considered. The line emissivity of the charge-exchange born O5+ ions are calculated by Spectral Analysis System for Astrophysical and Lab oratory (SASAL). It is found that the emission lines from the O5+ ranges from 105.607 to 118.291 eV with the strong line at 107.047 eV. We then simulated the magnetosheath X-ray emission intensity distributions with a virtual camera at two positions of north pole and dusk at six stages during the passing of a perpendicular interplanetary shock combined with a tangential discontinuity structure through the Earth’s magnetosphere. During this process, the X-ray emission intensity increases with time, and the maximum value is 27.11 keV cm-2 s-1 sr-1 on the dayside, which is 4.5 times that before the solar wind structure reaches the Earth. A clear shock structure can be seen in the magnetosheath and moves earthward. The maximum emission intensity seen at dusk is always higher than that seen at north pole.
Environmental and Earth Sciences, Space and Planetary Science
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