HR: 1340h
AN: P33B-1290    [Abstracts]
TI: Global Hydrid Modelling of the Venus Express MAG Observations
AU: * Jarvinen, R
EM: riku.jarvinen@fmi.fi
AF: Finnish Meteorological Institute, P.O. Box 503, Helsinki, 00101, Finland
AU: Kallio, E
EM: esa.kallio@fmi.fi
AF: Finnish Meteorological Institute, P.O. Box 503, Helsinki, 00101, Finland
AU: Barabash, S
EM: stas.barabash@irf.se
AF: Swedish Institute of Space Physics, P.O. Box 812, Kiruna, 98128, Sweden
AU: Zhang, T
EM: tielong.zhang@oeaw.ac.at
AF: Austrian Academy of Sciences, Space Research Institute, Schmiedlstr. 6, Graz, 8042, Austria
AU: Fedorov, A
EM: andrei.fedorov@cesr.fr
AF: Centre d'Etude Spatiale des Rayonnements, P.O. Box 4346, Toulouse, 31028, France
AU: Sillanpää, I
EM: ilkka.sillanpaa@fmi.fi
AF: Finnish Meteorological Institute, P.O. Box 503, Helsinki, 00101, Finland
AU: Janhunen, P
EM: pekka.janhunen@fmi.fi
AF: Finnish Meteorological Institute, P.O. Box 503, Helsinki, 00101, Finland
AB: When the unmagnetized planet Venus with a dense atmosphere interacts with the solar wind, an induced magnetosphere is formed and the interplanetary magnetic field (IMF) is enhanced and draped near the planet. Hybrid modelling is a semi-kinetic method to study the plasma interactions of Venus-like objects in a global planetary scale. HYB simulation code solves numerically the hybrid model equations and provides, for example, a three dimensional structure of the magnetic field in the objects's near-space. The magnetic fields produced by the HYB-Venus runs are compared to the Venus Express MAG magnetometer observations. Also, the possiblity to derive more information from the MAG-HYB comparison by rotating a quasi-stationary simulation solution around the Venus-Sun axis along the spacecraft orbit is studied. The rotations correspond to a dynamically changing clock angle in the upstream IMF.
DE: 2134 Interplanetary magnetic fields
DE: 2780 Solar wind interactions with unmagnetized bodies
DE: 6295 Venus
SC: Planetary Sciences [P]
MN: 2007 Fall Meeting