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Time assignment system and its performance aboard the Hitomi satellite
Journal of Astronomical Telescopes Instruments and Systems
Fast timing capability in X-ray observation of astrophysical objects is one of the key properties for the ASTRO-H (Hitomi) mission. Absolute timing accuracies of 350 micro second or 35 micro second are required to achieve nominal scientific goals or to study fast variabilities of specific sources. The satellite carries a GPS receiver to obtain accurate time information, which is distributed from the central onboard computer through the large and complex SpaceWire network. The details on thedoi:10.1117/1.jatis.4.1.011206 fatcat:kpfu2c4ie5g6dopstsi52rrikm