The MAJIS VIS-NIR channel : detector's characterization and radiative transfer modeling of Jupiter's atmosphere
(2025)
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- Abstract
- Jupiter is the largest planet in the Solar System and is of interest to the scientific community due to the extreme conditions to which its atmosphere is exposed, making it difficult to determine the spatial distribution of molecules and aerosols. The Jupiter ICy Moons Explorer (JUICE) is the next mission to the Jovian system and will constrain the current information about Jupiter with additional observations and measurements. This work focuses on the visible and near-infrared (VIS-NIR) channel of the Moons and Jupiter Imaging Spectrometer (MAJIS), a hyperspectral imager onboard JUICE, covering wavelengths between 0.5 and 2.35 µm. To understand its actual performances, it was necessary to develop a characterization facility for the characterization of the VIS-NIR detectors. The measured performances constituted key parameters for the development of the instrument's radiometric model after its calibration. Moreover, a radiative transfer model of Jupiter’s atmosphere was developed to assist the scientific activities of the MAJIS team, especially at wavelengths shorter than 2 µm. This was made by updating ASIMUT-ALVL, a radiative transfer model originally developed by the Royal Belgian Institute for Space Aeronomy (BIRA-IASB), and currently used to model terrestrial atmospheres. This work ends with the preliminary assessment of the performances of the MAJIS VIS-NIR channel and the description of further activities to support the expected arrival of JUICE around Jupiter, in 2031.
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Citations
Cisneros Gonzalez, M. E. (2025). The MAJIS VIS-NIR channel : detector’s characterization and radiative transfer modeling of Jupiter’s atmosphere. https://hdl.handle.net/2078.5/243334