Energetic Electron Beams in Ganymede's Magnetosphere

Details Energetic Electron Beams in Ganymede's Magnetosphere Energetic Electron Beams in Ganymede's Magnetosphere

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agusmsm43d..03w&link_type=abstract

American Geophysical Union, Spring Meeting 2004, abstract #SM43D-03

Physics

2716 Energetic Particles, Precipitating, 2732 Magnetosphere Interactions With Satellites And Rings, 2756 Planetary Magnetospheres (5443, 5737, 6030), 6218 Jovian Satellites

Scientific paper

Data from a series of Galileo close encounters with the Jovian moon Ganymede have provided much information about its magnetic field, its magnetosphere, and its trapped particle populations. Data obtained from the Energetic Particles Detector (EPD) during the final Ganymede encounter on December 28, 2000 yield further insights into the dynamics of Ganymede's magnetosphere. The encounter occurred at mid-latitudes at the beginning of the moon's plasma wake. In the region where trapped-like electron and ion distributions were measured, field-aligned electron beams also were observed. These beams were observed on two of the three occasions when EPD was oriented such that it could sample any extant beams (pitch angles greater than 170 degrees). We will discuss possible sources for these beams and compare them with those measured at Io.

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