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Exploration of Jupiter’s Magnetosphere, Europa and Io Gas Clouds and First Light by JUICE/PEP-Hi

Presentation #201.03 in the session Future Missions, Instrumentations and Facilities - Part 1 (Oral Presentation)

Published onOct 23, 2023
Exploration of Jupiter’s Magnetosphere, Europa and Io Gas Clouds and First Light by JUICE/PEP-Hi

The Jupiter Icy Moon Explorer (JUICE) mission was launched on 14 April 2023 and carries the Particle Environment Package (PEP) consisting of plasma and particle sensors, and Energetic Neutral Atom (ENA) cameras. Within PEP, the NASA-funded PEP-Hi contribution consists of the combined ion/ENA camera JENI and the electron spectrometer JoEE. Being fully commissioned, PEP-Hi has seen its “First Light” during cruise phase, where it is observing the solar wind. In 2031, JUICE will be doing its final approach to Jupiter and JENI will begin capturing ENA images of the otherwise invisible and giant Jovian magnetosphere, and its plasma and gas clouds emanating from Europa and Io. Once in orbit around Jupiter, PEP-Hi, together with the other sensors of PEP, will explore the Jovian magnetosphere – the biggest astrophysical object in our solar system. The investigations include the electron acceleration mechanisms responsible for the harsh radiation environment, and the heating processes that periodically generate the vast regions of ~10 million degrees plasma encircling Jupiter. Later in 2034, JUICE will be inserted in orbit around Ganymede and become the first spacecraft to orbit another moon, other than our own. Here, PEP will investigate the exotic magnetosphere of Ganymede and its interaction with the Jovian magnetosphere. This presentation provides an overview of the JoEE and JENI sensors, the First-Light results and their science observations during cruise and of the Jovian system.

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