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| PSR J1016-5857的周期跃变分析 | |
| Alternative Title | On Pulsar Glitches in PSR J1016—5857 |
周世奇1,2,3; 张洁1; 袁建平2 ; 冯中文1; 唐棋1; 朱晓丹1
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| 2018-03 | |
| Source Publication | 西华师范大学学报(自然科学版)
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| ISSN | 1673-5072 |
| Volume | 39Issue:1Pages:78-81 |
| Contribution Rank | 2 |
| Abstract | 利用澳大利亚的64 m帕克斯射电望远镜对PSR J1016-5857长达8.84 yr的计时数据,采用脉冲星计时方法,通过国际公认的tempo2模型拟合程序来分析,结果表明PSR J1016-5857发生了两次大幅度的周期跃变:2009年7月18日(MJD_55030.13)发生了一次周期跃变,周期跃变的大小为Δvg/v~1 912.5(2)×10-9并伴随着τd~21.2d的指数恢复过程,恢复系数Q~0.022和2013年8月29日(MJD_56533)发生了一次Δvg/v~1 460(2)×10-9的周期跃变。同时结合PSR J1016-5857发生的三次周期跃变事件,计算中子星外壳中的所含中子超流的转动惯量与整颗星转动惯量之比In/I~1.92%,验证了超流涡丝模型理论。 |
| Other Abstract | Abstract: About nine years' long-term pulse time-of-arrival measurements have been collected for the young pulsar PSRJ1016-5857 with the 64 m Parkes radio telescope in Australia. The pulsar glitches are analyzed by the technique known as "timing solutions"with tempo2. It shows that two glitches occurred on July 18,2009(MJD_55030.13) and August 29,2013(MJD_56533). The first glitch occurs with an abrupt increase in frequency with fractional size of Av./v~1912.5(2)×109including an exponential recovery with O~0.022 and r,~21.2 d. The second glitch event results in a sudden increase in the spin rate with magnitude △v./v~1 460(2)×109. In combination with the three glitches of PSRJ1016-5857, the ratio of the moment of inertia of the entire star and the superfluid component is calculated. It is proved that the value of the ratio 1,/1～1.92% conforms to the angular momentum transfer model. |
| Correspondent Email | zhangjie_mail@126.com |
| Keyword | 脉冲星 脉冲星计时 周期跃变 J1016-5857 |
| DOI | 10.16246/j.issn.1673-5072.2018.01.014 |
| Indexed By | 其他 |
| Language | 中文 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/2476 |
| Collection | 射电天文研究室_脉冲星研究团组 |
| Corresponding Author | 张洁 |
| Affiliation | 1.西华师范大学物理与空间科学学院，四川南充637009; 2.中国科学院新疆天文台，新疆乌鲁木齐830001; 3.中国科学院大学天文与空间科学学院，北京100049 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 周世奇,张洁,袁建平,等. PSR J1016-5857的周期跃变分析[J]. 西华师范大学学报(自然科学版),2018,39(1):78-81. |
| APA | 周世奇,张洁,袁建平,冯中文,唐棋,&朱晓丹.(2018).PSR J1016-5857的周期跃变分析.西华师范大学学报(自然科学版),39(1),78-81. |
| MLA | 周世奇,et al."PSR J1016-5857的周期跃变分析".西华师范大学学报(自然科学版) 39.1(2018):78-81. |
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| 周世奇-2018-PSR J1016-5（453KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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