The Relationships between Emission Geometry and Jitter Noise in Millisecond Pulsars
文献类型：期刊论文
| 作者 | Yuen,R.1,2,3,4 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2024-04-24 |
| 卷号 | 966期号:1页码:34 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad2e05 |
| 产权排序 | 1 |
| 英文摘要 | Abstract The relationships between several parameters of an emission geometry and jitter noise in 17 millisecond pulsars (MSPs) are investigated. By assuming the jitter noise is due only to a pulse variation in phase, the former can be modeled as changes in the plasma flow rate leading to variation in the measured pulse arrival time relative to the predicted time. In the model for pulsar magnetospheres with multiple emission states, the plasma flow is associated with the emission states, and a change in the emission state corresponds to a change in the plasma flow causing variation in the pulse arrival time. These can be specified in an emission geometry defined by the obliquity and viewing angles, measured from the rotation axis to the magnetic axis and to the line of sight, respectively. We calculate the maximum change in the emission state based on the reported jitter noise for each of the MSPs. Using the results, we show that the MSPs possess relatively large obliquity angles, which is consistent with observation, and the jitter noise exhibits dependency on frequency. We find that the jitter noise in our sample displays an exponential decay as a function that combines the obliquity angle and the rotation period, revealing the correlation among the three parameters. This suggests that the magnitude of the jitter noise is likely specific to an MSP. We discuss how jitter noise may be related to the evolution of an MSP. |
| WOS关键词 | THERMAL X-RAY ; DRIFTING SUBPULSES ; POLAR-CAP ; EMPIRICAL-THEORY ; RADIO-EMISSION ; FREQUENCY-DEPENDENCE ; PARTICLE SIMULATION ; POTENTIAL DROPS ; NEUTRON-STAR ; POLARIZATION |
| 资助项目 | National SKA Program of China[2020SKA0120200] ; National Key Program for Science and Technology Research and Development[2022YFC2205201] ; National Natural Science Foundation of China (NSFC) project[12288102] ; National Natural Science Foundation of China (NSFC) project[12041303] ; National Natural Science Foundation of China (NSFC) project[12041304] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-2] ; Open program of the Key Laboratory of Xinjiang Uygur Autonomous Region[2020D04049] ; 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 | IOP:APJ_966_1_34 |
| 出版者 | The American Astronomical Society |
| 资助机构 | National SKA Program of China ; National Key Program for Science and Technology Research and Development ; National Natural Science Foundation of China (NSFC) project ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; Open program of the Key Laboratory of Xinjiang Uygur Autonomous Region ; 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/45760611-7/6411]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Yuen,R. |
| 作者单位 | 1.SIfA, School of Physics, University of Sydney, Sydney, NSW 2006, Australia 2.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi, Xinjiang, 830011, People's Republic of China; ryuen@xao.ac.cn 3.Xinjiang Key Laboratory of Radio Astrophysics, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi, Xinjiang, 830011, People's Republic of China 4.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Yuen,R.. The Relationships between Emission Geometry and Jitter Noise in Millisecond Pulsars[J]. The Astrophysical Journal,2024,966(1):34. |
| APA | Yuen,R..(2024).The Relationships between Emission Geometry and Jitter Noise in Millisecond Pulsars.The Astrophysical Journal,966(1),34. |
| MLA | Yuen,R.."The Relationships between Emission Geometry and Jitter Noise in Millisecond Pulsars".The Astrophysical Journal 966.1(2024):34. |
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来源：新疆天文台
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