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arXiv 2409.16059astro-ph.HEastro-ph.IM
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结合FAST的CVN脉冲星探路观测

Pathfinding pulsar observations with the CVN incorporating the FAST

Zhen Yan, Zhiqiang Shen, Peng Jiang, Bo Zhang, Haiyan Zhang, Lang Cui, Jintao Luo, Rurong Chen, Wu Jiang, Hua Zhang, De Wu, Rongbing Zhao, Jianping Yuan, Yue Hu… 展开作者

Zhen Yan, Zhiqiang Shen, Peng Jiang, Bo Zhang, Haiyan Zhang, Lang Cui, Jintao Luo, Rurong Chen, Wu Jiang, Hua Zhang, De Wu, Rongbing Zhao, Jianping Yuan, Yue Hu, Yajun Wu, Bo Xia, Guanghui Li, Yongnan Rao, Chenyu Chen, Xiaowei Wang, Hao Ding, Yongpeng Liu, Fuchen Zhang, Yongbin Jiang

备注：
Accepted by the Chinese Physics Letters
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AI总结：

本文展示了结合FAST的CVN脉冲星探路观测结果，利用四台望远镜在L波段观测并经AIPS处理，以毫角秒级精度拟合了脉冲星位置，验证了VLBI方法在获取天体测量参数上比计时观测更准确。

摘要：

甚长基线干涉测量（VLBI）对脉冲星研究的重要性日益凸显，并受到越来越多的关注。本文展示了结合五百米口径球面射电望远镜（FAST）的中国VLBI网（CVN）的脉冲星探路观测结果。在MJD 60045（2023年4月11日），使用四台射电望远镜（FAST、天马、蒿坪和南山）在L波段以相位参考模式观测了PSRs B0919+06和B1133+16，并使用上海分布式FX型软件相关器的脉冲星分箱模式进行了相关处理。在使用NRAO天文图像处理系统（AIPS）进行进一步数据处理后，我们探测到了这两颗脉冲星，并以毫角秒级别的精度拟合了它们的当前位置。通过比较，我们的结果显示，与基于历史VLBI观测的预测值相比，其吻合度明显优于先前的计时观测，因为使用VLBI进行脉冲星天体测量提供了一种更直接且与模型无关的方法来准确获取相关参数。

英文摘要：

The importance of Very Long Baseline Interferometry (VLBI) for pulsar research is becoming increasingly prominent and receiving more and more attention. In this paper, we present pathfinding pulsar observation results with the Chinese VLBI Network (CVN) incorporating the Five-hundred-meter Aperture Spherical radio Telescope (FAST). On MJD 60045 (April 11th, 2023), PSRs B0919+06 and B1133+16 were observed with the phase-referencing mode in the L-band using four radio telescopes (FAST, TianMa, Haoping and Nanshan) and correlated with the pulsar binning mode of the distributed FX-style software correlator in Shanghai. After further data processing with the NRAO Astronomical Image Processing System (AIPS), we detected these two pulsars and fitted their current positions with accuracy at the milliarcsecond level. By comparison, our results show significantly better agreement with predicted values based on historical VLBI observations than that with previous timing observations, as pulsar astrometry with the VLBI provides a more direct and model-independent method for accurately obtaining related parameters.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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