Single-pulse Emission Variation of Two Pulsars Discovered by FAST
文献类型：期刊论文
| 作者 | Guo, Ziping7,8; Wen, Zhigang6,7,8 ; Yuan, Jianping6,7,8; Kou, Feifei7,8; Wu, Qingdong7,8; Wang, Na6,7,8; Zhu, Weiwei5; Li, Di2,5,7; Xue, Mengyao5; Wang, Pei1,5
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2023-07-01 |
| 卷号 | 23期号:7页码:14 |
| ISSN号 | 1674-4527 |
| 关键词 | (stars:) pulsars general - (stars:) pulsars individual (PSR J0211+4235, PSR J0553+4111) - stars neutron |
| DOI | 10.1088/1674-4527/accdc1 |
| 通讯作者 | Yuan, Jianping(yuanjp@xao.ac.cn) |
| 英文摘要 | We investigate the single-pulse emission variations of two pulsars, PSRs J0211+4235 and J0553+4111, observed with the Five-hundred-meter Aperture Spherical radio Telescope at the 1.25 GHz central frequency. The observation sessions span from 2020 December to 2021 July, with 21 and 22 observations for them respectively. The integrated pulse profile of PSR J0211+4235 shows that there is a weak pulse component following the main component, and PSR J0553+4111 displays a bimodal profile with a bridge component in the middle. PSR J0211+4235 presents significant nulling phenomenon with nulling duration lasting from 2 to 115 pulses and burst duration lasting from 2 to 113 pulses. The NF of each observation is determined to be 45%-55%. No emission greater than three s is found in the mean integrated profile of all nulling pulses. In most cases, the pulse energy changes abruptly during the transition from null to burst, while in the transition from burst to null there are two trends: abrupt and gradual. We find that the nulling phenomenon of PSR J0211+4235 is periodic by the Fourier transform of the null and burst state. In addition, the single-pulse modulation characteristics of these two pulsars are investigated, and the distributions of modulation index, LRFS and 2DFS are analyzed with PSRSALSA. The left peak of PSR J0553+4111 has intensity modulation. Finally, the polarization properties of these two pulsars are obtained through polarization calibration, and their characteristics are analyzed. The possible physical mechanisms of these phenomena are discussed. |
| WOS关键词 | EMPIRICAL-THEORY ; SUBPULSE MODULATION ; PERIODIC NULLS ; RADIO PULSARS ; PSR ; GEOMETRY ; MODES |
| 资助项目 | National Key Research and Development Program of China[2022YFC2205203] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-1] ; National Natural Science Foundation of China (NSFC)[U1838109] ; National Natural Science Foundation of China (NSFC)[12041304] ; Youth Innovation Promotion Association of CAS[2023069] ; Natural Science Foundation of Shanghai[20ZR1467600] ; project Xinjiang Uygur autonomous region of China |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| WOS记录号 | WOS:001015484700001 |
| 资助机构 | National Key Research and Development Program of China ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Natural Science Foundation of Shanghai ; project Xinjiang Uygur autonomous region of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5286]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Yuan, Jianping |
| 作者单位 | 1.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 102206, Peoples R China 2.Zhejiang Lab, Hangzhou 311121, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Chinese Acad Sci, Natl Time Serv Ctr NTSC, Xian 710600, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 6.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Ziping,Wen, Zhigang,Yuan, Jianping,et al. Single-pulse Emission Variation of Two Pulsars Discovered by FAST[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2023,23(7):14. |
| APA | Guo, Ziping.,Wen, Zhigang.,Yuan, Jianping.,Kou, Feifei.,Wu, Qingdong.,...&Huang, Zhipeng.(2023).Single-pulse Emission Variation of Two Pulsars Discovered by FAST.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,23(7),14. |
| MLA | Guo, Ziping,et al."Single-pulse Emission Variation of Two Pulsars Discovered by FAST".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 23.7(2023):14. |
入库方式： OAI收割
来源：新疆天文台
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