| Title: |
Venusian ion escape under extreme conditions : A dynamic pressure and temperature simulation study |
| Authors: |
Katrougkalou, M. C.; Persson, Moa; Aizawa, S.; André, N.; Modolo, R.; Jariel, E.; Kullen, A.; Karlsson, T. |
| Publisher Information: |
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen; KTH Royal Inst Technol, Space & Plasma Phys Div, Stockholm, Sweden.; Lab Phys Plasmas LPP, Paris, France.;Univ Toulouse, IRAP, CNRS UPS CNES, Toulouse, France.;ISAS JAXA, Sagamihara, Japan.; Univ Toulouse, IRAP, CNRS UPS CNES, Toulouse, France.;Univ Toulouse, Inst Super Aeronaut & Espace ISAE SUPAERO, Toulouse, France.; UVSQ Univ Paris Saclay, UPMC Univ Paris, CNRS, LATMOS IPSL, Guyancourt, France.; THALES, Toulouse, France. |
| Publication Year: |
2024 |
| Collection: |
Uppsala University: Publications (DiVA) |
| Subject Terms: |
methods: numerical; planets and satellites: atmospheres; planets and satellites: terrestrial planets; Fusion; Plasma and Space Physics; plasma och rymdfysik |
| Description: |
Context. We investigated the response of the Venusian atmospheric ion escape under the effect of interplanetary coronal mass ejections (ICMEs) using the Latmos Hybrid Simulation (LatHyS). Aims. In particular, we focused on the influence of extreme ICME dynamic pressures and temperatures, with the temperature being a parameter that has not been extensively studied in the past. Methods. Simulations were performed for two different dynamic pressures and three different temperatures. For the case of the dynamic pressure simulations, a density and a velocity enhancement event were studied separately. The H+ and O+ ion escape was then examined and compared for different escape channels. Results. In both dynamic pressure enhancement cases, we find that there is no clear dependence of the O+ ion escape on the dynamic pressure, which is consistent with observations. On the other hand, the temperature of the incoming solar wind positively influences the H+ and O+ ion escape. This is attributed in part to the enhanced gyroradius of the particles, which allows them to penetrate deeper into the planet’s atmosphere. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISBN: |
978-0-01-404351-4; 0-01-404351-3 |
| Relation: |
Astronomy and Astrophysics, 0004-6361, 2024, 691; ISI:001404351300008 |
| DOI: |
10.1051/0004-6361/202449326 |
| Availability: |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-550093; https://doi.org/10.1051/0004-6361/202449326 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.90189FB3 |
| Database: |
BASE |