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Jovian Infrared Auroral Mapper : ウィキペディア英語版 | Jovian Infrared Auroral Mapper
Jovian Infrared Auroral Mapper (JIRAM) is an instrument on the Juno spacecraft en route to the planet Jupiter. It is an image spectrometer and was contributed by Italy.〔(WISC - The Jupiter InfraRed Auroral Mapper )〕 Similar instruments are on ESA Rosetta, Venus Express, and Cassini-Huygens missions.〔 The primary goal of JIRAM is to probe the upper layers of Jupiter's atmosphere down to pressures of 5–7 bars (72–102 pound/square inch) at infrared wavelengths in the 2–5 μm interval using an imager and a spectrometer.〔 Jupiter's "hot spots" and auroral regions are targeted for study.〔(Adriani A, et al. - IRAM, the image spectrometer in the near infrared on board the Juno mission to Jupiter (2008) - Astrobiology )〕 It is hoped ions, ammonia, and phosphine can be mapped.〔(P. Irwin - Giant Planets of Our Solar System: Atmospheres, Composition, and Structure (2009) - Page 352 )〕 The ion of Hydrogen is rare on Earth, but is one of the most common ions in the universe and known as protonated molecular hydrogen or the trihydrogen cation. ==References==
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