Characteristics of Emission Non-nulling Pulsars Through Simulation
文献类型：期刊论文
| 作者 | Yuen, Rai1,2,3,4
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 24期号:4页码:045008 |
| 关键词 | radiation mechanisms: non-thermal stars: neutron (stars:) pulsars: general |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/ad2ee0 |
| 产权排序 | 1 |
| 英文摘要 | We investigate the population and several properties of radio pulsars whose emission does not null (non-nulling) through simulation of a large pulsar sample. Emission from a pulsar is identified as non-nulling if (i) the emission does not cease across the whole pulse profile, and (ii) the emission is detectable. For (i), we adopt a model for switching in the plasma charge density, and emission persists if the charge density is non-zero. For (ii), we assume that detectable emission originates from source points where it is emitted tangentially to the magnetic field-line and parallel to the line-of-sight. We find that pulsars exhibiting non-nulling emission possess obliquity angles with an average of 42.(degrees)5, and almost half the samples maintain a duty cycle between 0.05 and 0.2. Furthermore, the pulsar population is not fixed but dependent on the obliquity angle, with the population peaking at 20(degrees). In addition, three evolutionary phases are identified in the pulsar population as the obliquity angle evolves, with the majority of samples having an obliquity angle between 20(degrees) and 65(degrees). Our results also suggest that emission from a pulsar may evolve between nulling and non-nulling during its lifetime. |
| WOS关键词 | RADIO-EMISSION ; EMPIRICAL-THEORY ; DRIFTING SUBPULSES ; INTENSITY MEASUREMENTS ; WIDTH STATISTICS ; GEOMETRY ; POLARIZATION ; MULTIPLICITIES ; ALTITUDE |
| 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)[12288102] ; National Natural Science Foundation of China (NSFC)[12041303] ; National Natural Science Foundation of China (NSFC)[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 ; Ministry of Finance of China |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001192175800001 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| 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) ; 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 ; Ministry of Finance of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6237]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Yuen, Rai |
| 作者单位 | 1.Univ Sydney, Sch Phys, SIfA, Sydney, NSW 2006, Australia 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuen, Rai. Characteristics of Emission Non-nulling Pulsars Through Simulation[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2024,24(4):045008. |
| APA | Yuen, Rai.(2024).Characteristics of Emission Non-nulling Pulsars Through Simulation.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,24(4),045008. |
| MLA | Yuen, Rai."Characteristics of Emission Non-nulling Pulsars Through Simulation".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 24.4(2024):045008. |
入库方式： OAI收割
来源：新疆天文台
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