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Timing Results of 22 yr for PSR J0922+0638

文献类型：期刊论文

作者Liu, Peng3,4; Wang, Mingyang4; Yuan, Jianping1,2,3; Tu, Zhonghao4; Li, Ang4; Zhou, Xia1,2,3; Wang, Na1,2,3
刊名ASTROPHYSICAL JOURNAL
出版日期2025-08-01
卷号988期号:2页码:281
ISSN号0004-637X
DOI10.3847/1538-4357/adeb78
产权排序2
英文摘要We conducted a timing analysis of PSR J0922+0638 (B0919+06) using data from the Nanshan 26 m radio telescope and the MeerKAT telescope, spanning from 2001 January to 2023 March. During this 22 yr period, we discovered a previously unreported small glitch (glitch 1) before the well-known large glitch (glitch 2), occurring at MJD similar to 53325(3), with a frequency jump amplitude of Delta nu/nu similar to 0.79(6) x 10-9. We also identified 10 slow glitch events, half of which were newly detected. These slow glitches occurred quasi-periodically, with an average interval of approximately 553(21) days, fractional frequency changes ranging from Delta nu/nu similar to 1.13(1) x 10-9 to 4.08(5)x10-9, and a maximum fractional change in the first derivative of the frequency of Delta nu/nu similar to-4.6x10-3 . Additionally, our timing noise analysis reveals a change in the spectral index for noise power before and after glitch 2, with values of -6.0 and -5.3, respectively, likely due to this large glitch. Throughout the entire observation period, the first derivative of the spin frequency ( nu ) showed a periodic structure. The possible modulation period was estimated to be 537(24) days before the 700 days data gap at MJD 56716 and 600(58) days afterward. We discuss the periodic oscillations in pulsar rotation as a possible manifestation of spin-down noise and quasi-periodic slow glitches.
WOS关键词PULSAR-ARRAY PROGRAM ; CYCLICAL CHANGES ; GLITCH ACTIVITY ; SLOW GLITCHES ; MEERKAT ; STATE ; PRECESSION ; RESIDUALS ; DISCOVERY ; B0919+06
资助项目National SKA Program of China[2020SKA0120300] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0550300] ; National Natural Science Foundation of China[12273028] ; National Natural Science Foundation of China[12288102] ; National Natural Science Foundation of China[12494572] ; National Natural Science Foundation of China[12041304] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-4] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2023D01E20] ; XMU Training Program of Innovation and Enterpreneurship for Undergraduates ; Operation, Maintenance, and Upgrading Fund for Astronomical Telescopes and Facility Instruments, budgeted from the Ministry of Finance of China (MOF) ; Chinese Academy of Sciences (CAS)
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001562989200001
出版者IOP Publishing Ltd
资助机构National SKA Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; XMU Training Program of Innovation and Enterpreneurship for Undergraduates ; Operation, Maintenance, and Upgrading Fund for Astronomical Telescopes and Facility Instruments, budgeted from the Ministry of Finance of China (MOF) ; Chinese Academy of Sciences (CAS)
源URL[http://ir.xao.ac.cn/handle/45760611-7/8104]  
专题脉冲星研究团组
通讯作者Yuan, Jianping; Li, Ang
作者单位1.State Key Lab Radio Astron & Technol, Beijing 100101, Peoples R China
2.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
4.Xiamen Univ, Dept Astron, Xiamen 361005, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Peng,Wang, Mingyang,Yuan, Jianping,et al. Timing Results of 22 yr for PSR J0922+0638[J]. ASTROPHYSICAL JOURNAL,2025,988(2):281.
APA Liu, Peng.,Wang, Mingyang.,Yuan, Jianping.,Tu, Zhonghao.,Li, Ang.,...&Wang, Na.(2025).Timing Results of 22 yr for PSR J0922+0638.ASTROPHYSICAL JOURNAL,988(2),281.
MLA Liu, Peng,et al."Timing Results of 22 yr for PSR J0922+0638".ASTROPHYSICAL JOURNAL 988.2(2025):281.

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来源：新疆天文台

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