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Simultaneous measurements of Martian plasma boundaries by Rosetta and Mars Express
Authors:NJT Edberg  AI Eriksson  U Auster  S Barabash  A Bößwetter  CM Carr  SWH Cowley  E Cupido  M Fränz  K-H Glassmeier  R Goldstein  M Lester  R Lundin  R Modolo  H Nilsson  I Richter  M Samara  JG Trotignon
Institution:1. Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK;2. Swedish Institute of Space Physics, Box 537, 751 21 Uppsala, Sweden;3. Institute for Geophysics and Extraterrestrial Physics, TU Braunschweig, Germany;4. Institute for Theoretical Physics, TU Braunschweig, Germany;5. Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany;6. Swedish Institute of Space Physics, Kiruna, Sweden;7. The Blackett Laboratory, Imperial College London, London, UK;8. Southwest Research Institute, San Antonio, USA;9. Laboratoire de Physique et Chimie de l’Environnement, Orléans, France;1. International Space Science Institute, Bern, Switzerland;2. ESA Research and Scientific Support Department, Noordwijk, The Therlands;1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA;2. Ashima Research, Pasadena, CA 91101, USA;3. Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, USA;1. Department of Physics, Mbarara University of Science and Technology, Mbarara, Uganda;2. Department of Physics, Busitema University, Tororo, Uganda;3. South African National Space Agency (SANSA) Space Science, P.O. Box 32, Hermanus 7200, South Africa;1. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China;2. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;3. LSPM-CNRS, Université Paris 13, Sorbonne Paris Cité, 99 avenue J.-B. Clément, Villetaneuse F-93430, France;1. Max-Planck-Institute for Solar System Research, 37077, Göttingen, Germany;2. Rheinisches Institut fuer Umweltforschung, Abteilung Planetforschung, Cologne, Germany;3. Swedish Institute of Space Physics, Uppsala, Sweden;4. Institute of Space Research, Moscow, Russia;5. Swedish Institute of Space Physics, Kiruna, Sweden;1. Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, Huntsville, AL35899, United States;2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA91109, United States;3. Department of Space Science, UAH, Huntsville, AL35899, United States
Abstract:We present the first two-spacecraft near-simultaneous observations of the Martian bow shock (BS), magnetic pileup boundary (MPB) and photo-electron boundary (PEB) obtained by the plasma instruments onboard Rosetta and Mars Express during the Rosetta Mars flyby on February 25, 2007. Our observations are compared with shape models for the BS and MPB derived from previous statistical studies. The MPB is found at its expected position but the BS for this event is found significantly closer to the planet than expected for the rather slow and moderately dense solar wind. Cross-calibration of the density measurements on the two spacecraft gives a density profile through the magnetosheath, indicating an increasing solar wind flux during the Rosetta passage which is consistent with the multiple BS crossings at the Rosetta exit.
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