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Timing observations of Rotating Radio Transient J1819-1458 at Urumqi observatory
Esamdin, A.1; Zhao, C. S.1,2; Yan, Y.1,2; Wang, N.1; Nizamidin, H.3; Liu, Z. Y.1
2008-09-21
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume389Issue:3Pages:1399-1404
Contribution Rank3
Abstract

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.

KeywordStars : Neutron Pulsars : Individual : J1819-1458
SubtypeArticle
Subject Area致密天体、高能和基础物理
DOI10.1111/j.1365-2966.2008.13669.x
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordGiant Pulses ; Neutron-stars ; Pulsars ; Emission ; Magnetar ; Searches ; Density ; Bursts
Funding Project脉冲星研究团组
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000259087500038
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/71
Collection射电天文研究室_脉冲星研究团组
射电天文研究室
光学天文与技术应用研究室
研究生学位论文
其它
Corresponding AuthorEsamdin, A.
Affiliation1.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
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
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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