X射线成像与光谱任务计时系统开发
天体物理仪器与方法
2025-04-09 v1
摘要
本文描述了XRISM（X射线成像与光谱任务）计时系统的开发、设计、地面验证、轨道验证、性能测量与校准。该任务的科学目标要求计时绝对精度达1.0~ms。计时系统的所有组件均设计并验证在分配给各组件的计时误差预算范围内，以满足要求。XRISM发射后，利用脉冲星PSR~B1937+21在任务启动期间验证了地面调校计时系统的计时能力，发现总线和地面组件的计时抖动相对于NICER（中子星内部成分探索器）剖面低于15{\mu}s。在性能验证与校准期间，XRISM、NuSTAR（核光谱望远镜阵列）和NICER同步观测犬妇星，以测量系统的绝对计时偏移，显示XRISM主脉冲的到达时间与NICER和NuSTAR一致，误差在200{\mu}s以内。总之，XRISM计时系统的总线和地面组件的绝对计时精度符合500{\mu}s的计时误差预算。
引用
@article{arxiv.2503.13807,
title = {Development of the Timing System for the X-Ray Imaging and Spectroscopy Mission},
author = {Yukikatsu Terada and Megumi Shidatsu and Makoto Sawada and Takashi Kominato and So Kato and Ryohei Sato and Minami Sakama and Takumi Shioiri and Yuki Niida and Chikara Natsukari and Makoto S Tashiro and Kenichi Toda and Hironori Maejima and Katsuhiro Hayashi and Tessei Yoshida and Shoji Ogawa and Yoshiaki Kanemaru and Akio Hoshino and Kotaro Fukushima and Hiromitsu Takahashi and Masayoshi Nobukawa and Tsunefumi Mizuno and Kazuhiro Nakazawa and Shin'ichiro Uno and Ken Ebisawa and Satoshi Eguchi and Satoru Katsuda and Aya Kubota and Naomi Ota and Atsushi Tanimoto and Yuichi Terashima and Yohko Tsuboi and Yuusuke Uchida and Hideki Uchiyama and Shigeo Yamauchi and Tomokage Yoneyama and Satoshi Yamada and Nagomi Uchida and Shin Watanabe and Ryo Iizuka and Rie Sato and Chris Baluta and Matt Holland and Michael Loewenstein and Eric D Miller and Tahir Yaqoob and Robert S. Hill and Morgan D. Waddy and Mark Mekosh and Joseph B. Fox and Emily Aldoretta and Isabella Brewer and Koji Mukai and Kenji Hamaguchi and Francois Mernier and Anna Ogorzalek and Katja Pottschmidt and Mihoko Yukita and Toshihiro Takagi and Yugo Motogami and Teruaki Enoto and Takaaki Tanaka and Taichi Nakamoto and Chulsoo Kang and Tsuyoshi Miyazaki},
journal= {arXiv preprint arXiv:2503.13807},
year = {2025}
}
备注
18 pages, 8 figures, 6 tables. Accepted for publication SPIE JATIS XRISM special issue 2025