1. Far-ultraviolet imaging of Jupiter's aurora and the Io 'footprint.'
- Author
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Clarke, John T., Ballester, Gilda E., Trauger, John, Evans, Robin, Connerney, J.E.P., Stapelfeldt, Karl, Crisp, David, Feldman, Paul D., Burrows, Christopher J., Casertano, Stefano, Gallagher, III, John S., Griffiths, Richard E., Hester, J. Jeff, Hoessel, John G., Holtzman, Jon A., Krist, John E., Meadows, Vikki, Mould, Jeremy R., Scowen, Paul A., Watson, Alan M., and Westphal, James A.
- Subjects
Hubble Space Telescope (Artificial satellite) -- Observations ,Io (Satellite) -- Observations ,Auroras -- Observations ,Jupiter (Planet) -- Observations ,Satellites -- Jupiter ,Science and technology ,Observations - Abstract
Far-ultraviolet images of Jupiter from the Hubble Space Telescope Wide Field Planetary Camera 2 reveal polar auroral emissions at 300 kilometer resolution and three times higher sensitivity than previously achieved. Persistent features include a main oval containing most of the emission and magnetically connected to the middle magnetosphere, diffuse and variable emissions poleward of the main oval, and discrete emission from Io's magnetic footprint equatorward of the oval. The auroral emissions are variable, exhibit magnetic conjugacy, and are visible above the planet limb. All emissions approximately co-rotate with Jupiter except the Io 'footprint,' which is fixed along Io's magnetic flux tube., The presence and approximate strength of Jupiter's magnetic field have been known since the 1954 detection of radio emissions from trapped charged particles (1). In 1964 the decametric emissions were [...]
- Published
- 1996