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Main task Space plasma physics with emphasis on magnetospheres or planetary wakes Based on data analysis preferentially from missions flying IWF instruments: e.g., Cluster, THEMIS, VEX Main research topics 1.Space plasma processes Current sheet, reconnection, waves, ballooning instability 2.Dynamics of magnetosphere and SW-M-I coupling processes Plasma jets and their interaction with ambient fields Comparative magnetospheres Refereed publications (since Jan 2013) Total: 51 (first author: 14) Educational activities (since Jan 2013) Master thesis: 1 Lecturing at University of Graz, teaching at Graz University of Technology and Fachhochschule Wiener Neustadt für Wirtschaft und Technik Space Plasma Physics: Magnetospheres IWF/ÖAW1
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Lead:R. Nakamura Members Staff: M. Andriopoulou, M. Delva, E. Panov, F. Plaschke, M. Volwerk, T. Zhang, (S. Kiehas, D. Korovinsky, W. Teh left) (Collab. staff: P. Boakes, M. Khodachenko, C. Möstl, Y. Sasunov, Z. Vörös) Students:PhD: A. Alexandrova, D. Schmid; Master: R. Teubenbacher Cooperation within IWF Plasma turbulence, Cluster analysis (Narita et al.) Instrument/Mission plan for MMS, BepiColombo, JUICE (Jeszenszky/ Magnes/Steller et al.) Cometary science with Rosetta (Kömle et al.) Research plan for solar system space weather (Lammer et al.) Key international collaboration China: CAS; Germany: TU Braunschweig; Japan: JAXA, Tokyo Inst. Tech.; Russia: St. Petersburg Univ., IKI/RAS; USA: UCLA, UNH Who are we? IWF/ÖAW2
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Earth’s magnetosphere Dynamics of current sheets Plasma jet interaction with ambient fields Kinetic processes in reconnection region and thin current sheet Ionospheric responses Plasma environment at Venus, Mars & Comet Ion pick-up, low frequency waves, magnetosheath turbulence Induced magnetosphere, “magnetotail”, flux ropes Comparison with model & simulations Reconnection, current sheet models Instabilities: Kelvin-Helmholtz, interchange, double-gradient Space Plasma Laboratories IWF/ÖAW3 2007- 2001-2006 Cluster THEMIS
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High-speed (super-Alfvénic/magneto- sonic) jets in the subsolar magneto- sheath impact Earth’s magnetopause with higher pressure ionospheric effects expected Magnetic field structures associated with different types of high-speed flow events are obtained using different analysis methods Plasma Jet Structures IWF/ÖAW4 Localized plasma jets play significant roles in magnetosphere dynamics (Plaschke et al., 2013) (Kiehas et al., 2013) (Teh et al., 2013)
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Change in normal component (Bz) of current sheet around substorm onset More in POSTER (E. Panov) IWF/ÖAW5 Near-Earth Magnetotail Current Sheet Dipolarization front & flow bouncing: Multiple fronts with different scales before flow-bouncing Near-Earth current sheet disturbances are multi-scale in time and space (Nakamura et al., 2013) (Petrukovich et al., 2013) Oscillatory flow braking: Observed profile recovered in MHD models more in Poster (Panov)
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August 2014: arrival of Rosetta at 67P/Churyumov-Gerasimenko Plasma physics with RPC: Rosetta Plasma Consortium Preparation study for detecting cometary plasma processes: For different outgassing rates amplitude of water-group ion cyclotron (IC) waves in the undisturbed solar wind Minimum level for detecting IC waves is examined using Pioneer 10 near Jupiter Giotto flyby at 27P/Grigg–Skjellerup is used to estimate occurrence of IC waves IWF/ÖAW6 Cometary Plasma Physics Cyclotron waves during Rosetta approach phase will provide indication of the outgassing rate of the comet (Volwerk et al., 2013) Lower limit from SW 0.1 nT amplitude
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Electron physics are main target in Magnetospheric Multi-Scale (MMS) Magnetotail reconnection region with Cluster: highly structured, small normal component New method developed to determine spin-axis offset from electron drift instrument (EDI) and applied to Cluster data Magnetic field measurement accuracy of 0.1nT during entire orbit achieved Preparation for Electron-Scale Studies IWF/ÖAW7 Highly structured current sheet near X-line (reconnection region) Accuracy of 0.1 nT at MMS X-line structures can be determined within few 10s km resolution in magnetotail (Wang et al., 2014)
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Space plasma laboratory, Multi-scale approach (MMS, THEMIS, Cluster): Thin current sheets: reconnection instabilities in near- Earth tail and magnetopause Plasma jets and their interaction with ambient plasma in the magnetotail and in the magnetosheath Comparison with model/theory Comprehensive research of induced “magnetospheres” at 67P/C-G, Mars, Venus (Rosetta, MAVEN, VEX): Ion-pickup, mirror-mode waves, bow shock, diamagnetic cavity, current sheets Dusty and partially-ionized plasmas in current sheets Planetary Space Weather (Cluster, THEMIS, MMS, RBSP, SWARM, STEREO, VEX, MEX, Cassini): Responses to extreme solar events, storms/substorms Comparative magnetotails/wakes Future Plans: 2015-2018 IWF/ÖAW8
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Weekly Space Plasma Physics Seminar IWF/ÖAW9 Attendees of the Space Plasma Physics Seminar (25 April 2014) Members of the Space Plasma Physics Groups (magnetospheres & heliosphere) get together with collaborators (from different teams) & guests every Friday for an informal seminar
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Doz. Dr. Rumi Nakamura Career Summary 1990-1991Research Associate, National Institute of Polar Research, Tokyo, Japan 1991-1993Research Associate, NASA Goddard Space Flight Center, USA 1993-1998Assistant Professor, Solar-Terrestrial Environment Laboratory, Nagoya University, Japan 1998-2001Senior Scientist, Max-Planck-Institut für extraterrestrische Physik, Germany since 2001Group Leader, Institut für Weltraumforschung, ÖAW, Austria since 2010Lecturer, Institute of Physics, University of Graz, Austria Publications Refereed Articles: 265(First Author: 38) Citations in SCI:5706(Hirsch Index: 39) Research Interests Space plasma physics, based on data analysis from satellites and ground-based measurements Recognition 2005Woman Researcher of the Month, Ministry for Transport, Innovation & Technology, Austria 2005Tanakadate Award, Society of Geomagnetism & Earth, Planetary & Space Sciences, Japan 2008Corresponding Member, International Academy of Astronautics 2011 Full Member, International Academy of Astronautics 2014 Julius-Bartels Medal, European Geophysical Union Editorial/Advisory Boards 2007-2009Associate Editor, Geophysical Research Letters 2007-2013Editor, Annales Geophysicae 2008-2012Associate Editor, Journal of Geophysical Research 2011- International Space Science Institute, Science Committee
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