| 基于DBBC+Mark 5B记录系统的脉冲星观测 |
| |
| 引用本文： | 李志玄,汪敏,郝龙飞,罗近涛.基于DBBC+Mark 5B记录系统的脉冲星观测[J].天文研究与技术,2011,8(1). |
| |
| 作者姓名： | 李志玄 汪敏 郝龙飞 罗近涛 |
| |
| 作者单位： | 中国科学院国家天文台云南天文台;中国科学院研究生院;中国科学院天体结构与演化重点实验室;中国科学院上海天文台; |
| |
| 基金项目： | 国家自然科学天文联合基金(10978006)资助 |
| |
| 摘 要： | 2009年11月,云南天文台射电天文研究团组采用40 m射电望远镜以及基于DBBC(Digital Base Band Conveter)和Mark 5B的VLBI记录系统对PSR J0835-4510和PSRJ0332+5434进行了观测。观测选用S波段右旋圆极化信号,起始频率为2 206.99 MHz,总带宽为32 MHz。对数据进行相干消色散和平均后,得到PSR J0332+5434的单脉冲图像和两颗脉冲星的平均脉冲轮廓。由平均轮廓的展宽随时间的变化关系,对脉冲星的视周期作了一定修正后,得到信噪比更高的平均轮廓图。最后对轮廓的信噪比随时间的变化作了初步分析,由此可了解整个系统在观测时的稳定性。
|
| 关 键 词： | 脉冲星PSR J0835-4510 脉冲星PSR J0332 5434 40m射电望远镜 VLBI终端 相干消色散 |
Observations of Pulsars with a Record System Combining a DBBC and a Mark 5B |
| |
| Li Zhixuan,Wang Min,Hao Longfei,Luo Jintao.Observations of Pulsars with a Record System Combining a DBBC and a Mark 5B[J].Astronomical Research & Technology,2011,8(1). |
| |
| Authors: | Li Zhixuan Wang Min Hao Longfei Luo Jintao |
| |
| Institution: | Li Zhixuan1,2,3,Wang Min1,Hao Longfei1,Luo Jintao2,4(1.Yunnan Observatory,Chinese Academy of Sciences,Kunming 650011,China,2.Graduate University of the Chinese Academy of Sciences,Beijing 100049,3.Key Laboratory for the Structure and Evolution of Celestial Objects,4.Shanghai Astronomical Observatory,Shanghai 200030,China) |
| |
| Abstract: | In November 2009,some observations of the pulsars PSR J0332+5434 and PSR J0835-4510 were carried out by the radio astronomy group of the YNAO(the Yunnan Observatory),with a VLBI backend based on a DBBC(Digital Baseband Conveter)and Mark 5B combination.A RCP(Right Circular Polarization)S-band detection range was selected for the observations.The range has a width of 32 MHz and a starting frequency at 2 206.99 MHz.After the de-dispersing and averaging,single pulses of PSR J0332+5434 and mean profiles of both ... |
| |
| Keywords: | Pulsar PSR J0835-4510 Pulsar PSR J0332 5434 40 m Radio Telescope VLBI backend Coherent de-dispersion |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
