The low energy plasma in the Uranian magnetosphere |
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| Institution: | 1. Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301, USA;2. Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK;3. Southwest Research Institute, San Antonio, TX 78228, USA;4. Jet Propulsion Laboratory, MS 183-501, Pasadena, CA 91109, USA;1. Jet Propulsion Laboratory/California Institute of Technology, 4800 Oak Grove Dr, Pasadena, CA 91109, United States;2. Southwest Research Institute, 6220 Culebra Rd., San Antonio, TX 78236, United States;3. Department of Physics & Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom;4. Space Science Institute, 4750 Walnut St, Suite 205, Boulder, CO 80301, United States;5. Atmospheric, Oceanic & Planetary Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, United Kingdom |
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| Abstract: | The Plasma Science experiment on Voyager 2 detected a magnetosphere filled with a tenuous plasma, rotating with the planet. Temperatures of the plasma, composed of protons and electrons, ranged from 10 eV to ∼1 keV. The sources of these protons and electrons are probably the ionosphere of Uranus or the extended neutral hydrogen cloud surrounding the planet. As at Earth, Jupiter, and Saturn, there is an extended magnetotail with a central plasma sheet. Although similar in global structure to the magnetospheres of these planets, the large angle between the rotation and magnetic axes of the planet and the orientation of the rotation axis with respect to the solar wind flow make the Uranian magnetosphere unique. |
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