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Results of 15 yr Pulsar Timing of PSR J0007+7303 with Fermi-LAT

文献类型：期刊论文

作者Yu, Zhi-xiang12; Dang, Shi-jun12; Wang, Wei-hua3; Wang, Hui-hui4; Li, Lin2; Li, Wei1,11; Yuan, Jian-ping11; Kou, Fei-fei8,11; Bai, Jun-tao11; Ge, Mingyu9
刊名ASTROPHYSICAL JOURNAL
出版日期2025-09-20
卷号991期号:1页码:70
ISSN号0004-637X
DOI10.3847/1538-4357/adf4d6
产权排序5
英文摘要The study of pulsar glitches provides a unique window into the internal structure and dynamic processes of neutron stars. PSR J0007+7303, a very bright gamma-ray pulsar, is the first pulsar discovered by the Fermi-Large Area Telescope (LAT) telescope. In this paper, we present the 15 yr of timing results of this pulsar using the Fermi-LAT data. We identified nine glitches, five of which are newly discovered. Among these new glitches, two are small glitches, occurring between the three previously reported ones, while the other three are large glitches. The glitches exhibit fractional frequency changes ranging from 21.5 x 10-9 to 1239 x 10-9, with intervals of approximately 1-2 yr between events. Uniquely, this pulsar shows no exponential recovery behavior following any glitch, setting it apart from most glitching pulsars. Furthermore, no significant changes were observed in the gamma-ray pulse profile, flux, or phase-averaged spectra before and after glitches, indicating the stability of the pulsar's emission properties despite internal changes. A parametric analysis of the glitches yielded a fractional moment of inertia of the crustal superfluid involved in glitches as 1.06%, which matches extremely well with previous statistical work if the nondissipative entrainment effect is not considered and strongly supports the internal origin of these glitches. These results highlight the distinct glitch behavior of PSR J0007+7303 and offer valuable insights into the crust-superfluid interaction in neutron stars. The physical origin of no exponential recovery is also discussed.
WOS关键词GAMMA-RAY PULSAR ; NEUTRON-STAR CRUST ; EFFECTIVE-MASS ; VELA PULSAR ; ENTRAINMENT COEFFICIENT ; CONDUCTION NEUTRONS ; RADIO-PULSARS ; VORTEX CREEP ; CRAB PULSAR ; MODE-CHANGE
资助项目Key Laboratory of Xinjiang Uyghur Autonomous Region[2022D04015] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013 - 2] ; Guizhou Province Science and Technology Foundation[ZK[2022]304] ; Guizhou Provincial Science and Technology Projects[[2023]003] ; QKHPTRC-ZDSYS[[2023]003] ; QKHPTRC-ZDSYS[[2024]001-1] ; Scientific Research Project of the Guizhou Provincial Education[[2022]132] ; Scientific Research Project of the Guizhou Provincial Education[[2022]137] ; Scientific Research Project of the Guizhou Provincial Education[[2022]123] ; Foundation of Education Bureau of Guizhou Province, China[(2020) 003] ; National Natural Science Foundation of China[12403054] ; Zhejiang Provincial Natural Science Foundation of China[LQ24A030002] ; China Postdoctoral Science Foundation[2023M743517] ; Science and Technology department of Gansu province[20JR5RA481] ; National Natural Science Foundation of China (NSFC) project[12403046] ; Natural Science Basic Research Program of Shaanxi[2024JC-YBQN-0036] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2023D01E20] ; Sichuan Provincial Natural Science Foundation[2025ZNSFSC0878] ; Academic New Seedling Fund Project of Guizhou Normal University[[2022]B18] ; Natural Science Foundation of China[12203093] ; National Key Research and Development Program[2022YFA1603104]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001572910500001
出版者IOP Publishing Ltd
资助机构Key Laboratory of Xinjiang Uyghur Autonomous Region ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; Guizhou Province Science and Technology Foundation ; Guizhou Provincial Science and Technology Projects ; QKHPTRC-ZDSYS ; Scientific Research Project of the Guizhou Provincial Education ; Foundation of Education Bureau of Guizhou Province, China ; National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Science and Technology department of Gansu province ; National Natural Science Foundation of China (NSFC) project ; Natural Science Basic Research Program of Shaanxi ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Sichuan Provincial Natural Science Foundation ; Academic New Seedling Fund Project of Guizhou Normal University ; Natural Science Foundation of China ; National Key Research and Development Program
源URL[http://ir.xao.ac.cn/handle/45760611-7/8132]  
专题脉冲星研究团组
通讯作者Dang, Shi-jun; Wang, Wei-hua; Shang, Lun-hua
作者单位1.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830011, Xinjiang, Peoples R China
3.Wenzhou Univ, Coll Math & Phys, Wenzhou 325035, Peoples R China
4.Henan Univ Sci & Technol, Sch Phys & Engn, Luoyang 471023, Peoples R China
5.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China
6.Sichuan Univ Sci & Engn, Sch Phys & Elect Engn, Yibin 644000, Peoples R China
7.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
8.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China
9.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
10.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Yu, Zhi-xiang,Dang, Shi-jun,Wang, Wei-hua,et al. Results of 15 yr Pulsar Timing of PSR J0007+7303 with Fermi-LAT[J]. ASTROPHYSICAL JOURNAL,2025,991(1):70.
APA Yu, Zhi-xiang.,Dang, Shi-jun.,Wang, Wei-hua.,Wang, Hui-hui.,Li, Lin.,...&Wang, Na.(2025).Results of 15 yr Pulsar Timing of PSR J0007+7303 with Fermi-LAT.ASTROPHYSICAL JOURNAL,991(1),70.
MLA Yu, Zhi-xiang,et al."Results of 15 yr Pulsar Timing of PSR J0007+7303 with Fermi-LAT".ASTROPHYSICAL JOURNAL 991.1(2025):70.

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来源：新疆天文台

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