The response of the cometary ionosphere to space weather forcing

• DOI: 10.5194/egusphere-egu24-18658
• Publication Date: 2024-03-11T10:07:27Z
• Authors: Aniko Timar; Zoltan Nemeth; Jim Burch
• Keywords: Forcing (mathematics); Space Weather

The Rosetta spacecraft, traversing the inner magnetosphere of comet 67P/Churyumov-Gerasimenko, observed medium-energy ions cometary origin. These ions, moving in direction nucleus, are likely accelerated outer regions comet's magnetosphere. Emerging from low-energy ion background, their signal can reach energies between 50 and 1000 eV over a few hours or days spectrum measured by RPC IES sensor Rosetta. Over similar time scale, they gradually lose energy before disappearing again measurements. During these events, background is depleted. To explain temporal characteristics spectrum, we investigated effects dynamic pressure solar wind surrounding on ions. We demonstrated that there very good correlation quantity detected Rosetta: when increases, amount also increases. Additionally, observe significant as well, although influenced other parameters, such activity distance nucleus.