Other
Scientific paper
Sep 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.2893s&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 18, p. 2893-2896
Other
18
Planetology: Solid Surface Planets: Interactions With Particles And Fields, Planetology: Comets And Small Bodies: Ionospheres-Structure And Dynamics, Planetology: Comets And Small Bodies: Remote Sensing, Planetology: Solar System Objects: Jovian Satellites
Scientific paper
With the recent observations of Io's very striking equatorial aurora by Roesler et al. [1999], it is now possible to remotely sense Io's local interaction with the Io plasma torus. Here we present an explanation for the formation of Io's aurora which implies that Io's electron flow is strongly rotated and shielded around Io. The Hall effect close to Io breaks the interaction symmetry to produce a brighter anti-Jovian radiation spot, and it also results in rotated Alfvén wings. Observations of Io's aurora also impose new constraints on Io's atmosphere. We find, among other things, an atomic oxygen to sulfur dioxide ratio of ~20%.
Neubauer Fritz Manfred
Saur Joachim
Strobel Darrell F.
Summers Michael E.
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