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| Glitches in four gamma-ray pulsars and inferences on the neutron star structure | |
Gugercinoglu, E.1,2; Ge, M. Y.3; Yuan, J. P.4,5 ; Zhou, S. Q.6
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| 2022-02-01 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 511Issue:1Pages:425-439 |
| Contribution Rank | 4 |
| Abstract | We present timing solutions from the Fermi-LAT observations of gamma-ray pulsars PSR J0835 - 4510 (Vela), PSR J1023-5746, PSR J2111+4606, and PSR J2229+6114. Data ranges for each pulsar extend over a decade. From data analysis, we have identified a total of 20 glitches, 11 of which are new discoveries. Among them, 15 glitches are large ones with Delta nu/nu greater than or similar to 10(-6). PSR J1023-5746 is the most active pulsar with glitch activity parameter being A(g) = 14.5 x 10(-7) yr(-1) in the considered data span and should be a target for frequently glitching Vela-like pulsars in future observations. We have done fits within the framework of the vortex creep model for 16 glitches with Delta nu/nu greater than or similar to 10(-7). By theoretical analysis of these glitches, we are able to obtain important information on the structure of neutron star, including moments of inertia of the superfluid regions participated in glitches and coupling time-scales between various stellar components. The theoretical prediction for the time to the next glitch from the parameters of the previous one is found to be in qualitative agreement with the observed inter-glitch time-scales for the considered sample. Recoupling time-scales of the crustal superfluid are within the range of theoretical expectations and scale inversely with the spin-down rate of a pulsar. We also determined a braking index n = 2.63(30) for PSR J2229+6114 after glitch-induced contributions have been removed. |
| Keyword | stars: neutron pulsars: general pulsars: individual: PSR J0835-4510 (Vela) pulsars: individual: PSR J1023-5746 pulsars: individual: PSR J2111+4606 pulsars: individual: PSR J2229+6114 |
| DOI | 10.1093/mnras/stac026 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | EQUATION-OF-STATE ; VORTEX CREEP ; SPIN-UP ; BRAKING INDEX ; RADIO PULSARS ; VELA PULSAR ; HIGH-ENERGY ; INTERNAL TEMPERATURE ; SUPERFLUID CORE ; MAGNETIC-FIELD |
| Funding Project | Scientific and Technological Research Council of Turkey (TuBTAK)[117F330] ; National Natural Science Foundation of China[U1838201] ; National Natural Science Foundation of China[U1838202] ; National Natural Science Foundation of China[U1838104] ; National Natural Science Foundation of China[U1938103] ; National Natural Science Foundation of China[U1938109] ; National Natural Science Foundation of China[11873080] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000770033900025 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | Scientific and Technological Research Council of Turkey (TuBTAK) ; National Natural Science Foundation of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4597 |
| Collection | 射电天文研究室_脉冲星研究团组 |
| Corresponding Author | Gugercinoglu, E.; Ge, M. Y. |
| Affiliation | 1.Hekim Tahsin St 7, TR-34467 Istanbul, Turkey 2.Sabanci Univ, Fac Engn & Nat Sci, TR-34956 Istanbul, Turkey 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 5.Chinese Acad Sci, Ctr Astron Megasci, Beijing 100012, Peoples R China 6.Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China |
| Recommended Citation GB/T 7714 | Gugercinoglu, E.,Ge, M. Y.,Yuan, J. P.,et al. Glitches in four gamma-ray pulsars and inferences on the neutron star structure[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,511(1):425-439. |
| APA | Gugercinoglu, E.,Ge, M. Y.,Yuan, J. P.,&Zhou, S. Q..(2022).Glitches in four gamma-ray pulsars and inferences on the neutron star structure.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,511(1),425-439. |
| MLA | Gugercinoglu, E.,et al."Glitches in four gamma-ray pulsars and inferences on the neutron star structure".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 511.1(2022):425-439. |
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| Gugercinoglu-2022-Gl（2095KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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