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Dynamical features and spatial structures of the plasma interaction region of 67P/Churyumov–Gerasimenko and the solar wind

Koenders, C. and Glassmeier, K.-H. and Richter, I. and Ranocha, H. and Motschmann, U. (2014) Dynamical features and spatial structures of the plasma interaction region of 67P/Churyumov–Gerasimenko and the solar wind. Planetary and Space Science, 105, pp. 101-116. Elsevier. DOI: 10.1016/j.pss.2014.11.014 ISSN 0032-0633

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Official URL: http://dx.doi.org/10.1016/j.pss.2014.11.014


In the advent of the Rosetta arrival at the comet 67P/Churyumov–Gerasimenko, we present a global 3D hybrid simulation model of the cometary plasma interaction which resolves the innermost coma sufficiently. As Rosetta will only provide local information, global simulations are required to put these local observations into a wider global perspective. In the selected scenario close to the perihelion, the gas production of the comet is large enough to trigger a cometary bow shock and a small diamagnetic cavity around the nucleus. The simulation reveals the presence of a cometary ionopause and a recombination layer, which is in general agreement with single-fluid MHD simulations. However, we found an asymmetry in the interaction region caused by the pick-up of the cometary ions, which effects all known boundaries. In addition, we study the velocity distributions of the ions and find the presence of three distinct populations of cometary ions at the inner boundaries. The bifurcation created in the ion energy spectrum might be observable by the instruments onboard the Rosetta spacecraft.

Item URL in elib:https://elib.dlr.de/97056/
Document Type:Article
Title:Dynamical features and spatial structures of the plasma interaction region of 67P/Churyumov–Gerasimenko and the solar wind
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Koenders, C.Institut für Geophysik und extraterrestrische Physik,Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany, E-Mail: c.koenders (at) tu-braunschweig.deUNSPECIFIED
Glassmeier, K.-H.Inst. for Geophysics and Extraterrestrial Physics, TU BraunschweigUNSPECIFIED
Richter, I.Institut für Geophysik und Extraterrestrische Physik der Technischen Universität Braunschweig, Braunschweig, GermanyUNSPECIFIED
Ranocha, H.Institut für Theoretische Physik, Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, GermanyUNSPECIFIED
Motschmann, U.uwe.motschmann (at) dlr.deUNSPECIFIED
Date:20 November 2014
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.pss.2014.11.014
Page Range:pp. 101-116
Keywords:Comet, Churyumov-Gerasimenko, Rosetta, Plasma interaction, Hybrid simulation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt ROSETTA Instrumente
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Bründl, Tara-Marie
Deposited On:04 Sep 2015 08:41
Last Modified:08 Mar 2018 18:48

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