Cometary boundaries: VEGA observations at Halley |
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| Institution: | 1. Johns Hopkins Applied Physics Laboratory, Laurel, MD 20723, USA;2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA;3. PDS Atmospheres Node, Department of Astronomy, New Mexico State University, Las Cruces, NM, USA;1. INCAS - National Institute for Aerospace Research “Elie Carafoli”, B-dul Iuliu Maniu 220, Bucharest, 061126, Romania;2. ESA - European Space Agency, Rue Jacques Hillairet 52, Paris, 75012, France;3. ESA - European Space Agency, Keplerlaan 1, 2201 AZ Noordwijk, Netherlands;4. Research Center for Aeronautics and Space, University POLITEHNICA of Bucharest, Str. Ghe. Polizu, no. 1, Bucharest, 011061, Romaniaa |
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| Abstract: | This paper describes the boundaries which have been observed by the magnetic field experiment aboard the VEGA-1 and VEGA-2 spacecraft during the Halley encounters on March 6 and 9, 1986. The outer boundaries are found to be closely related to the predicted cometary shock front. The inner boundaries near the closest approach are compared with plasma observations and with the results of MHD computer simulations in three dimensions. |
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