{"paper":{"title":"Time Assignment System and Its Performance aboard the Hitomi Satellite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"ADNET Systems), Chikara Natsukari (ISAS/JAXA), Hiroaki Mine (NEC Corporation), Hiroki Hihara (NEC Corporation, ISAS/JAXA), Kaori Iwase (Saitama Univ.), Kazuyo Mizushima (NEC Corporation), Kenya Oshimizu (Saitama Univ.), Lorella Angelini (NASA/GSFC), Ltd.), Maika Murakami (Saitama Univ.), Makoto S. Tashiro (Saitama Univ., Masanobu Ozaki (ISAS/JAXA), Masaru Kasahara (NEC Space Technologies, Michael Witthoeft (NASA/GSFC, Mina Ogawa (ISAS/JAXA), Motohide Kokubun (ISAS/JAXA), NEC Space Technologies, Satoko Kawakami (NEC Space Technologies, Seiya Yabe (Saitama Univ.), Shigenobu Sugimoto (Saitama Univ.), Souhei Nakaya (Saitama Univ.), Sunao Yamaguchi (Saitama Univ.), Susumu Kumagai (NEC Space Technologies, Tadayasu Dotani (ISAS/JAXA), Tadayuki Takahashi (ISAS/JAXA), Takashi Kominato (NEC Corporation), Taku Inoue (Saitama Univ.), Tomomi Kouzu (Saitama Univ., Yoshitaka Ishisaki (Tokyo Metropolitan Univ), Yukikatsu Terada (Saitama Univ.)","submitted_at":"2017-12-05T05:45:57Z","abstract_excerpt":"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 the time system on the hardware and software design are described. In the distribution of the time informati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.01484","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}