在Asiago Cima Ekar天文台用Aqueye看到的螃蟹脉冲星
The Crab pulsar seen with Aqueye at Asiago Cima Ekar Observatory
摘要：
我们正在开发快速光子计数器仪器，利用铷钟和全球定位系统接收器，以前所未有的准确度对光子到达时间进行时间标记，从而研究天体物理源的快速变化。这种光学光子计数器的第一个实现被称为Aqueye（阿西亚戈量子眼），于2008年安装在阿西亚戈182厘米的哥白尼天文台。Aqueye多次观察蟹状星云脉冲星，并收集了高质量的数据，使我们能够对蟹状星云脉冲星进行精确的光学计时，并以出色的清晰度研究从几天到几年的时间尺度上的脉冲形状稳定性。我们的结果加强了蟹状星云脉冲星的自旋和磁轴之间的倾角的十年稳定性的证据。我们的仪器未来的实现将利用伽利略全球导航卫星系统（GNSS）的时间信号。
英文摘要：
We are developing fast photon-counter instruments to study the rapid variability of astrophysical sources by time tagging photon arrival times with unprecedented accuracy, making use of a Rubidium clock and GPS receiver. The first realization of such optical photon-counters, dubbed Aqueye (the Asiago Quantum Eye), was mounted in 2008 at the 182cm Copernicus Observatory in Asiago. Aqueye observed the Crab pulsar several times and collected data of extraordinary quality that allowed us to perform accurate optical timing of the Crab pulsar and to study the pulse shape stability on a timescale from days to years with an excellent definition. Our results reinforce the evidence for decadal stability of the inclination angle between the spin and magnetic axis of the Crab pulsar. Future realizations of our instrument will make use of the Galileo Global Navigation Satellite System (GNSS) time signal.
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