Observations of Bright Pulses from Pulsar B0031-07 at 4.82 GHz
文献类型：期刊论文
| 作者 | Wen, Z. G.6,7,8 ; Yuen, R.8; Wang, N.7,8; Tu, Z. Y.8; Yan, Z.5; Yuan, J. P.7,8; Yan, W. M.7,8; Chen, J. L.4,8; Wang, H. G.3,8; Shen, Z. Q.5
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2021-09-01 |
| 卷号 | 918期号:2页码:8 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac0e90 |
| 通讯作者 | Wen, Z. G.(wenzhigang@xao.ac.cn) |
| 英文摘要 | We report on the detection of 146 (0.96%) bright pulses with a peak flux density >0.86 Jy from PSR B0031-07 in 4 hr of continuous observations made at 4.82 GHz, with a bandwidth of 1 GHz, using the Shanghai Tian Ma 65 m radio telescope. We find that the peak flux density distribution follows a power law with index alpha = -3.6 +/- 0.2, while the pulse energy appears to follow a logarithmic normal distribution. The bright pulses from PSR B0031-07 were observed to repeat in an irregular fashion. The intervals between bright pulses can be described with an exponentiated Weibull distribution. Furthermore, the sensitive observations at higher frequency with a short time resolution of 65.54 mu s form a reliable basis for detailed microstructure studies. Close inspection of the detected bright pulses reveals that 38 pulses exhibit well-defined quasi-periodicities. No unanimous period for the quasi-periodicities is found, and the peak flux density is independent of the micropulse width. Finally, possible physical mechanisms are discussed. |
| WOS关键词 | GIANT PULSES ; RADIO-EMISSION ; CRAB PULSAR ; MICROSTRUCTURE |
| 资助项目 | Chinese National Science Foundation[U1838109] ; Chinese National Science Foundation[U1731238] ; Chinese National Science Foundation[U1831102] ; Chinese National Science Foundation[U1631106] ; Chinese National Science Foundation[11873080] ; National Natural Science Foundation of China[12041304] ; National SKA Program of China[2020SKA0120100] ; Astronomical Research Centre of the Chinese Academy of Sciences ; National Program on Key Research and Development Project[2016YFA0400804] ; Xinjiang uygur autonomous region of China ; Open Fund of Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000695450500001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | Chinese National Science Foundation ; National Natural Science Foundation of China ; National SKA Program of China ; Astronomical Research Centre of the Chinese Academy of Sciences ; National Program on Key Research and Development Project ; Xinjiang uygur autonomous region of China ; Open Fund of Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4271]  |
| 专题 | 研究单元未命名 新疆天文台_射电天文研究室 射电天文研究室_数字技术实验室 |
| 通讯作者 | Wen, Z. G. |
| 作者单位 | 1.Key Lab Microwave Technol, Urumqi 830011, Xinjiang, Peoples R China 2.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Xinjiang, Peoples R China 3.Guangzhou Univ, Sch Phys & Elect Engn, Guangzhou 510006, Peoples R China 4.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng 044000, Shanxi, Peoples R China 5.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 6.Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Guizhou, Peoples R China 7.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 8.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, Z. G.,Yuen, R.,Wang, N.,et al. Observations of Bright Pulses from Pulsar B0031-07 at 4.82 GHz[J]. ASTROPHYSICAL JOURNAL,2021,918(2):8. |
| APA | Wen, Z. G..,Yuen, R..,Wang, N..,Tu, Z. Y..,Yan, Z..,...&Mao, J. W..(2021).Observations of Bright Pulses from Pulsar B0031-07 at 4.82 GHz.ASTROPHYSICAL JOURNAL,918(2),8. |
| MLA | Wen, Z. G.,et al."Observations of Bright Pulses from Pulsar B0031-07 at 4.82 GHz".ASTROPHYSICAL JOURNAL 918.2(2021):8. |
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来源：新疆天文台
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