In Orbit Timing Calibration of the Hard X-Ray Detector on Board Suzaku

Yukikatsu Terada, Teruaki Enoto, Ryouhei Miyawaki, Yoshitaka Ishisaki, Tadayasu Dotani, Ken Ebisawa, Masanobu Ozaki, Yoshihiro Ueda, Lucien Kuiper, Manabu Endo, Yasushi Fukazawa, Tsuneyoshi Kamae, Madoka Kawaharada, Motohide Kokubun, Yoshikatsu Kuroda, Kazuo Makishima, Kazunori Masukawa, Tsunefumi Mizuno, Toshio Murakami, Kazuhiro Nakazawa, Atsushi Nakajima, Masaharu Nomach, Naoki Shibayama, Tadayuki Takahashi, Hiromitsu Takahashi, Makoto S. Tashiro, Toru Tamagawa, Shin Watanabe, Makio Yamaguchi, Kazutaka Yamaoka, Daisuke Yonetoku

Published 2007-11-17Version 1

The hard X-ray detector (HXD) on board the X-ray satellite Suzaku is designed to have a good timing capability with a 61 $\mu$s time resolution. In addition to detailed descriptions of the HXD timing system, results of in-orbit timing calibration and performance of the HXD are summarized. The relative accuracy of time measurements of the HXD event was confirmed to have an accuracy of $1.9\times 10^{-9}$ s s$^{-1}$ per day, and the absolute timing was confirmed to be accurate to 360 $\mu$s or better. The results were achieved mainly through observations of the Crab pulsar, including simultaneous ones with RXTE, INTEGRAL, and Swift.