April 3, 2009
"HST (and other)
Observations of the Aurora on Jupiter and Saturn"
Jupiter and Saturn's auroral
emissions were first observed around 1980
using the IUE observatory and the Voyager spacecraft. They have
imaged at high resolution by HST, with continuing studies providing
increasing detail and information about the physical processes that
the outer planet magnetospheres. The most recent observations
advantage of the Cassini and New Horizons spacecraft to make comparative
measurements of the local environment close in time to HST
talk will give a brief history of the observations, summarize the
different physical conditions at Jupiter and Saturn (compared with the
Earth), and report on recent results from cross-spacecraft comparisons.