Highlights ► Earth-orbiting satellites have found various X-ray emission from the Jupiter system. ► X-ray imaging spectroscopy can be a new probe of the Jupiter system. ► We introduce the first in-situ X-ray imaging spectrometer for the Japanese mission.

    Abstract For the future Japanese exploration mission of the Jupiter’s magnetosphere (JMO: Jupiter Magnetospheric Orbiter), a unique instrument named JUXTA (Jupiter X-ray Telescope Array) is being developed. It aims at the first in-situ measurement of X-ray emission associated with Jupiter and its neighborhood. Recent observations with Earth-orbiting satellites have revealed various X-ray emission from the Jupiter system. X-ray sources include Jupiter’s aurorae, disk emission, inner radiation belts, the Galilean satellites and the Io plasma torus. X-ray imaging spectroscopy can be a new probe to reveal rotationally driven activities, particle acceleration and Jupiter–satellite binary system. JUXTA is composed of an ultra-light weight X-ray telescope based on micromachining technology and a radiation-hard semiconductor pixel detector. It covers 0.3–2keV with the energy resolution of <100eV at 0.6keV. Because of proximity to Jupiter (∼30 Jovian radii at periapsis), the image resolution of <5arcmin and the on-axis effective area of >3cm2 at 0.6keV allow extremely high photon statistics and high resolution observations.


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    Title :

    JUXTA: A new probe of X-ray emission from the Jupiter system



    Published in:

    Advances in Space Research ; 51 , 9 ; 1605-1621


    Publication date :

    2012-11-19


    Size :

    17 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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