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Conference Papers Year : 2017

Simulating the Solar Wind Interaction with Comet 67P/Churyumov-Gerasimenko: Latest Results

Abstract

First observed in 1969, comet 67P/Churyumov-Gerasimenko was escorted for almost two years along its 6.45-yr elliptical orbit by ESA's Rosetta orbiter spacecraft. When a comet is sufficiently close to the Sun, the sublimation of ice leads to an outgassing atmosphere and the formation of a coma, and a dust and plasma tail. Comets are critical to decipher the physics of gas release processes in space. The latter result in mass-loaded plasmas, which more than three decades after the Active Magnetospheric Particle Tracer Explorers (AMPTE) space release experiments are still not fully understood. Using a 3D fully kinetic approach, we study the solar wind interaction with comet 67P/Churyumov-Gerasimenko, focusing in particular on the ion-electron dynamics for various outgassing rates. A detailed kinetic treatment of the electron dynamics is critical to fully capture the complex physics of mass-loading plasmas and to describe the strongly inhomogeneous plasma dynamics observed by Rosetta, down to electron kinetic scales.
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Dates and versions

insu-03570128 , version 1 (13-02-2022)

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Jan Deca, A. V. Divin, P. Henri, A. I. Eriksson, S. Markidis, et al.. Simulating the Solar Wind Interaction with Comet 67P/Churyumov-Gerasimenko: Latest Results. American Geophysical Union Fall Meeting 2017, Dec 2017, San Francisco, United States. ⟨insu-03570128⟩
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