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Timing and evolution of PSR B0950+08

文献类型：期刊论文

作者Huang, Hai-tao5,6; Zhou, Xia3,4,6; Yuan, Jian-ping3,4,6; Zheng, Xiao-Ping1,2
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2022-04-08
卷号512期号:4页码:4689-4696
关键词stars: evolution stars: magnetic field stars: neutron pulsars: individual: PSR B0950+08
ISSN号0035-8711
DOI10.1093/mnras/stac703
通讯作者Zhou, Xia(zhouxia@xao.ac.cn)
英文摘要We present timing solutions of PSR B0950+08, using 14 years of observations from the Nanshan 26-m Radio Telescope of Xinjiang Astronomical Observatory. The braking index of PSR B0950+08 varies from -367 392 to 168 883, which shows an oscillation with large amplitude (similar to 10(5)) and uncertainty. Considering the variation of braking indices and the most probable kinematic age of PSR B0950+08, a model with long-term magnetic field decay modulated by short-term oscillations is proposed to explain the timing data. With this magnetic field decay model, we discuss the spin and thermal evolution of PSR B0950+08. The uncertainties of its age are also considered. The results show that three-component oscillations are the more reasonable for the spin-frequency derivative distributions of PSR B0950+08, and the initial spin period of PSR B0950+08 must be shorter than 97 ms when the age is equal to the lower bound of its kinematic age. The standard cooling model could explain the surface temperature of PSR B0950+08 with its most probable kinematic age. Vortex creep heating with a long-term magnetic field decay could maintain a relatively high temperature at the later stages of evolution and explain the thermal emission data of old and warm pulsars. Coupling with the long-term magnetic field decay, an explanation of the temperature of PSR B0950+08 with roto-chemical heating needs an implausibly short initial rotation period (P-0 less than or similar to 17ms). The spin and thermal evolution of pulsars should be studied simultaneously. Future timing, ultraviolet or X-ray observations are essential for studying the evolution and interior properties of pulsars.
资助项目Opening Foundation of Xinjiang Key Laboratory[2021D04016] ; Chinese Academy of Sciences (CAS) `Light of West China' Program[2018-XBQNXZ-B-025] ; National Natural Science Foundation of China[12033001] ; National Natural Science Foundation of China[11873040] ; National Natural Science Foundation of China[11873080] ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments from the Ministry of Finance of China (MOF)
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000779699200003
出版者OXFORD UNIV PRESS
资助机构Opening Foundation of Xinjiang Key Laboratory ; Chinese Academy of Sciences (CAS) `Light of West China' Program ; National Natural Science Foundation of China ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments from the Ministry of Finance of China (MOF)
源URL[http://ir.xao.ac.cn/handle/45760611-7/4761]  
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
通讯作者Zhou, Xia
作者单位1.Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China
2.Huazhong Univ Sci & Technol, Sch Phys, Dept Astron, Wuhan 430074, Peoples R China
3.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China
4.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
5.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
6.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Hai-tao,Zhou, Xia,Yuan, Jian-ping,et al. Timing and evolution of PSR B0950+08[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,512(4):4689-4696.
APA Huang, Hai-tao,Zhou, Xia,Yuan, Jian-ping,&Zheng, Xiao-Ping.(2022).Timing and evolution of PSR B0950+08.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,512(4),4689-4696.
MLA Huang, Hai-tao,et al."Timing and evolution of PSR B0950+08".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 512.4(2022):4689-4696.

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