Giotto observations of the bow shock at Comet Halley |
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| Institution: | 1. Institute for Atmospheric and Earth System Research/Physics, University of Helsinki, Finland;2. Finnish Meteorological Institute, Helsinki, Finland;3. Department of Astronomy, University of Maryland, College Park, MD20742 United States;4. NASA Goddard Space Flight Center, Greenbelt MD20771, United States;1. Institute of Environmental Physics, University of Bremen, Germany;2. Image Processing Laboratory, University of Valencia, Spain;3. Deutscher Wetterdienst (DWD), Offenbach, Germany |
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| Abstract: | Preliminary results from the JPA instrument on Giotto indicate that Comet Halley, even on the flanks, has a bow shock which moves backwards and forwards over the spacecraft. To understand the structure properly will require more detailed investigation of the relationships between three particle populations, cometary ions, solar wind ions and electrons. |
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