Timing observations of Rotating Radio Transient J1819-1458 at Urumqi observatory
文献类型：期刊论文
| 作者 | Esamdin, A.1 ; Zhao, C. S.1,2; Yan, Y.1,2; Wang, N.1; Nizamidin, H.3; Liu, Z. Y.1
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2008-09-21 |
| 卷号 | 389期号:3页码:1399-1404 |
| 关键词 | stars : neutron pulsars : individual : J1819-1458 |
| ISSN号 | 0035-8711 |
| 通讯作者 | aliyi@xao.ac.cn |
| 英文摘要 | We report the timing-analysis results obtained for Rotating Radio Transient (RRAT) J1819-1458 from regular timing observations at 1.54 GHz using the Urumqi 25-m radio telescope between 2007 April and 2008 March. RRAT J1819-1458 is a relatively young and highly magnetized neutron star discovered by its sporadic short bursts in the Parkes Multibeam Pulsar Survey data. In 94 h of observation data, we detected a total of 162 dispersed bursts of RRAT J1819-1458 with the signal-to-noise ratios (S/Ns) above 5 sigma threshold. Among them, five bursts clearly show two-component structure. The S/N of the strongest burst is 13.3. The source's DM measured through our data is 196.0 +/- 0.4 pc cm(-3). The timing position, frequency and its first derivative were determined using standard pulsar timing techniques on the arrival times of these individual bursts. The accuracy of the solved rotating parameters is improved comparing with that in previous publication. Our timing position with 2 sigma error is consistent with the position of its X-ray counterpart CXOU J181934.1-145804. The effect of timing noise and the phase fluctuation of the individual short bursts on the timing residuals is briefly discussed. The distribution of the timing residuals is bimodal, which cannot be explained readily by timing irregularity. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 致密天体、高能和基础物理 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | GIANT PULSES ; NEUTRON-STARS ; PULSARS ; EMISSION ; MAGNETAR ; SEARCHES ; DENSITY ; BURSTS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000259087500038 |
| 公开日期 | 2013-03-06 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/71]  |
| 专题 | 脉冲星研究团组 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 Observ, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Xinjiang Univ, Dept Phys, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Esamdin, A.,Zhao, C. S.,Yan, Y.,et al. Timing observations of Rotating Radio Transient J1819-1458 at Urumqi observatory[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2008,389(3):1399-1404. |
| APA | Esamdin, A.,Zhao, C. S.,Yan, Y.,Wang, N.,Nizamidin, H.,&Liu, Z. Y..(2008).Timing observations of Rotating Radio Transient J1819-1458 at Urumqi observatory.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,389(3),1399-1404. |
| MLA | Esamdin, A.,et al."Timing observations of Rotating Radio Transient J1819-1458 at Urumqi observatory".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 389.3(2008):1399-1404. |
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来源：新疆天文台
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