New determination of the position of the pulsar B0329+54 with Chinese VLBI network
New determination of the position of the pulsar B0329+54 with Chinese VLBI network
复制标题
DOI：
10.1007/s11433-010-4054-6
复制
发表时间：
2010-07
期刊：
影响因子：
--
通讯作者：
Li Guo;Xing-wu Zheng;Bo Zhang;Weihua Wang;W. Zheng;F. Shu;Jinling Li;Yun-Chuan Yu;L. Hao;Jian-ping Yuan;B. Xia
中科院分区：
文献类型：
--
作者：
Li Guo;Xing-wu Zheng;Bo Zhang;Weihua Wang;W. Zheng;F. Shu;Jinling Li;Yun-Chuan Yu;L. Hao;Jian-ping Yuan;B. Xia
2008年10月16日，我们首次在S波段对脉冲星B0329+54进行了成功的CVN相位参考观测。采用距脉冲星2.5°的一个新的背景源J0347+5557作为位置参考，它比以往观测中使用的背景源更靠近脉冲星，而且更适合于“点头”模式。通过拟合像，可以精确地确定脉冲星相对于定标器的位置，其精度可达几十μ s，与目前的差分VLBI天体测量精度相当，证明CVN将是天体测量和天体物理学的一个潜在的强有力的工具。
We present the first successful CVN (Chinese VLBI Network) phase-referencing observation of the pulsar B0329+54 on October 16, 2008 in S band. A new background source, J0347+5557, 2.5° away from the pulsar was employed as a position reference, which is closer to the pulsar and better for the ‘nodding’ mode than that used in previous observations. The position by fitting image of the pulsar relative to the calibrator is accurately determined at the level of tens of μas, which is comparable with the present differential VLBI astrometric accuracy, proving that CVN will be a potential powerful tool for astrometry and astrophysics.