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Abstract

The Galileo mission was the first to orbit Jupiter and lasted from 1995 to 2003. Its data set is unique even compared to contemporary data from the Juno mission since Galileo had an equatorial orbit, as it is necessary to sample equatorially mirroring particles.

Galileo also had several close moon flybys.

It carried instrumentation designed to provide measurements of >MeV electrons. Different to for example optical instruments that can also respond to such particles, an instrument designed to measure radiation is much more straightforward to calibrate.

Here we describe Galileo's EPD suite (Energetic Particle Detector) and its measurements.

EPD measures energetic charged particles roughly in the energy range of tens of keV to tens of MeV while distinguishing particle species.

This document fills in gaps in the EPD documentation and summarizes already published information. We describe the content of the newly delivered PDS data and how the data has been processed. At the end we also show sample data, explain typical features and possible pitfalls.