JEDI
JEDI (Jovian Energetic Particle Detector Instrument), is an instrument on the Juno spacecraft sent to orbit planet Jupiter.[1] It is part of a suite of instruments to study the magnetosphere of Jupiter.[1]
JEDI is designed to collect data on "energy, spectra, mass species (H, He, O, S), and angular distributions";[1] the plan is to study the energies and distribution of charged particles.[2] It can detect them at between 30 and 1,000,000 keV, whereas JADE, another instrument on the spacecraft, is designed to observe below 30 keV.[3] One of the concepts being studied is that energy from Jupiter's rotation is being converted into its atmosphere and magnetosphere.[3]
It is radiation hardened to collect in situ data on the planet's auroral magnetic field lines, the equatorial magnetosphere, and the polar ionosphere [1] It was built by the Johns Hopkins University Applied Physics Laboratory (APL).[4] One of the goals is to understand the aurora, and how particles are accelerated to such high speeds.[5] One of the mysteries of Jupiter is that X-rays are emitted from the poles, but do not seem to come from the auroral ring.[6]
References
- ^ a b c d D. Haggerty, et al. - JEDI -- The Jupiter Energetic Particle Detector for the Juno mission (2008)
- ^ W. Grahm - ULA Atlas V launches NASA’s Juno on a path to Jupiter (2011) - Nasaspaceflight.com
- ^ a b NASA - Video on JEDI
- ^ Space Scientists Seek Returns from JEDI
- ^ P. Gilster - Juno: Into the Jovian Magnetosphere - Centari Dreams
- ^ Puzzling X-rays from Jupiter
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