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Pulsar timing at Urumqi Astronomical Observatory: observing system and results
文献类型：期刊论文
| 作者 | Wang, N1,2,3 ; Manchester, RN2; Zhang, J1; Wu, XJ3; Yusup, A1; Lyne, AG4; Cheng, KS5; Chen, MZ1
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2001-12-11 |
| 卷号 | 328期号:3页码:855-866 |
| 关键词 | astronomical data bases : miscellaneous pulsars : general |
| 英文摘要 | A pulsar timing system has been operating in the 18-cm band at the Urumqi Astronomical Observatory 25-m telescope since mid-1999. Frequency resolution allowing de-dispersion of the pulsar signals is provided by a 2 x 128 x 2.5 MHz filterbank/digitizer system. Observations of 74 pulsars over more than 12 months have resulted in updated pulsar periods and period derivatives, as well as improved positions. Comparison with previous measurements showed that the changes in period and period derivative tend to have the same sign and to be correlated in amplitude. A model based on unseen glitches gives a good explanation of the observed changes, suggesting that long-term fluctuations in period and period derivatives are dominated by glitches. In 2000 July, we detected a glitch of relative amplitude Deltav/v similar to 24 x 10(-9) in the Crab pulsar. The post-glitch decay appears similar to other large Crab glitches. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | IMPROVED PARAMETERS ; PROPER MOTIONS ; GLITCHES ; YOUNG |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000172925600018 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/856]  |
| 专题 | 脉冲星研究团组 25米望远镜运行组 微波接收机技术实验室 射电天文研究室_利用南山26米射电望远镜观测数据的文章 |
| 作者单位 | 1.CAS, Natl Astron Observ, Urumqi 830011, Peoples R China 2.CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia 3.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 4.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England 5.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, N,Manchester, RN,Zhang, J,et al. Pulsar timing at Urumqi Astronomical Observatory: observing system and results[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2001,328(3):855-866. |
| APA | Wang, N.,Manchester, RN.,Zhang, J.,Wu, XJ.,Yusup, A.,...&Chen, MZ.(2001).Pulsar timing at Urumqi Astronomical Observatory: observing system and results.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,328(3),855-866. |
| MLA | Wang, N,et al."Pulsar timing at Urumqi Astronomical Observatory: observing system and results".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 328.3(2001):855-866. |
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来源：新疆天文台
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