Results of 12 yr of Pulsar Timing at Nanshan. I. | |
Dang, S. J.2,4; Yuan, J. P.1,2; Manchester, R. N.6; Li, L.2,5; Wang, N.1,2; Wang, J. B.1,2; Hobbs, G.6; Liu, Z. Y.1,2; Kou, F. F.2,3 | |
刊名 | ASTROPHYSICAL JOURNAL |
2020-06-01 | |
卷号 | 896期号:2页码:140 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ab9082 |
产权排序 | 1 |
英文摘要 | We have used the Nanshan 25 m Radio Telescope at Xinjiang Astronomical Observatory to obtain timing observations of 87 pulsars from 2002 July to 2014 March. Using the "Cholesky" timing analysis method we have determined positions and proper motions for 48 pulsars, 24 of which are improved positions compared to previously published values. We also present the first published proper motions for nine pulsars and improved proper motions for 21 pulsars using the pulsar timing and position-comparison method. The pulsar rotation parameters are derived and are more accurate than previously published values for 36 pulsars. Glitches are detected in three pulsars: PSRs J1722-3632, J1852-0635, and J1957+2831. For the first two, the glitches are large, with Delta nu(g)/nu > 10(-6), and they are the first detected glitches in these pulsars. PSR J1722-3632 is the second oldest pulsar, with a large glitch. For the middle-age pulsars (tau(c) > 10(5) yr), the calculated braking indices, vertical bar n vertical bar, are strongly correlated with tau(c) and the numbers of positive and negative values of n are almost equal. For young pulsars (tau(c) < 10(5) yr), there is no correlation between vertical bar n vertical bar and tau(c) and most have n > 0. |
URL标识 | 查看原文 |
资助项目 | National Key Research and Development Program of China[2016YFA0400804] ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments ; National Natural Science Foundation of China[11463005] ; National Natural Science Foundation of China[11873080] ; Doctoral Research Start-up Fund at Xinjiang University ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; National Key R&D Program of China[2018YFA0404603] |
WOS关键词 | FREQUENCY 2ND DERIVATIVES ; BRAKING INDEXES ; PROPER MOTIONS ; RADIO PULSARS ; GLITCHES ; DISCOVERY ; NOISE |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000548355000001 |
资助机构 | National Key Research and Development Program of China ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments ; National Natural Science Foundation of China ; Doctoral Research Start-up Fund at Xinjiang University ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; National Key R&D Program of China |
内容类型 | 期刊论文 |
源URL | [http://ir.xao.ac.cn/handle/45760611-7/3568] |
专题 | 新疆天文台_射电天文研究室 |
通讯作者 | Yuan, J. P.; Wang, N. |
作者单位 | 1.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, XinJiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing, Peoples R China 4.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 5.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi, Xinjiang, Peoples R China 6.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia |
推荐引用方式 GB/T 7714 | Dang, S. J.,Yuan, J. P.,Manchester, R. N.,et al. Results of 12 yr of Pulsar Timing at Nanshan. I.[J]. ASTROPHYSICAL JOURNAL,2020,896(2):140. |
APA | Dang, S. J..,Yuan, J. P..,Manchester, R. N..,Li, L..,Wang, N..,...&Kou, F. F..(2020).Results of 12 yr of Pulsar Timing at Nanshan. I..ASTROPHYSICAL JOURNAL,896(2),140. |
MLA | Dang, S. J.,et al."Results of 12 yr of Pulsar Timing at Nanshan. I.".ASTROPHYSICAL JOURNAL 896.2(2020):140. |
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