PSR J1023 +0038的精确光学计时，这是Asiago Aqueye+探测到的第一颗毫秒脉冲星
Precise optical timing of PSR J1023+0038, the first millisecond pulsar detected with Aqueye+ in Asiago
摘要：
我们报告的第一个检测的光学毫秒脉冲星的快速光子计数器Aqueye+在Asiago。这是对在国家伽利略望远镜上用SiFAP获得的PSR J1023+0038毫秒脉动探测的独立确认。我们于2018年1月在哥白尼望远镜上使用Aqueye+观测了过渡毫秒脉冲星PSR J1023+0038。探测到了非常显著的脉动。旋转周期与从X射线星历表推断的值一致，而升交点的通过时间与使用X射线轨道周期预测的值相差$11.55 \pm 0.08$ s。在几天的基线上导出独立的光学定时解决方案，其在脉冲相位上具有$\sim 0.007$的精度（在时间上为$\sim 12$ $μ$ s）。需要这种精度来推导出脉冲星的精确相干定时解决方案，并使用未来的X射线和光学同步观测来搜索光学和X射线脉冲之间可能的相移。
英文摘要：
We report the first detection of an optical millisecond pulsar with the fast photon counter Aqueye+ in Asiago. This is an independent confirmation of the detection of millisecond pulsations from PSR J1023+0038 obtained with SiFAP at the Telescopio Nazionale Galileo. We observed the transitional millisecond pulsar PSR J1023+0038 with Aqueye+ mounted at the Copernicus telescope in January 2018. Highly significant pulsations were detected. The rotational period is in agreement with the value extrapolated from the X-ray ephemeris, while the time of passage at the ascending node is shifted by $11.55 \pm 0.08$ s from the value predicted using the orbital period from the X-rays. An independent optical timing solution is derived over a baseline of a few days, that has an accuracy of $\sim 0.007$ in pulse phase ($\sim 12$ $μ$s in time). This level of precision is needed to derive an accurate coherent timing solution for the pulsar and to search for possible phase shifts between the optical and X-ray pulses using future simultaneous X-ray and optical observations.
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