A study of 80 known pulsars at 185 MHz using MWA incoherent drift-scan observations
文献类型：期刊论文
| 作者 | Yu, Ting2,3; Gong, Hongyu5; Gao, Zhifu1; Zhang, Zhongli3,4; Wen, Zhigang1; Wang, Yujie2,3; An, Tao2,3,4 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 543期号:4页码:3814-3829 |
| 关键词 | scattering catalogues stars: neutron pulsars: general |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/staf1700 |
| 通讯作者 | Yu, Ting(yuting@shao.ac.cn) |
| 英文摘要 | A systematic study of 80 known pulsars observed at 185 MHz has been conducted using archival incoherent-sum data from the Murchison Widefield Array (MWA). The data set comprises 48 drift-scan observations from the MWA Voltage Capture System, covering similar to 30 000 deg(2) of sky with sensitivities reaching similar to 8 mJy in the deepest regions. An optimized presto-based search pipeline was deployed on the China SKA Regional Centre infrastructure. This enabled the detection of 80 known pulsars - representing a similar to 60 per cent increase over the previous census. Notably, this includes 30 pulsars with first-time detections at this frequency, of which pulse profiles and flux densities are presented. Spectral, scattering, and pulse-width properties were examined for the sample, providing observational constraints on low-frequency turnover, propagation effects, and width-period relations. This study highlights the value of wide-field, low-frequency time-domain surveys for constraining pulsar emission and propagation, offering empirical insights that may inform future observations with instruments such as SKA-Low. |
| WOS关键词 | SOUTHERN SKY SURVEY ; I. SURVEY DESCRIPTION ; RADIO TRANSIENT ; MULTIPLE-SCATTERING ; EMPIRICAL-THEORY ; LOW-FREQUENCIES ; EMISSION ; LOFAR ; ARRAY ; SCINTILLATION |
| 资助项目 | National Natural Science Foundation of China[2020SKA0120201] ; National SKA Program of China[2022A03013-1] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12041304] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12288102] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12373114] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12003009] ; National Natural Science Foundation of China |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001598031800001 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | National Natural Science Foundation of China ; National SKA Program of China ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8259]  |
| 专题 | 脉冲星研究团组 |
| 通讯作者 | Yu, Ting |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.State Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China 5.Dali Univ, Inst Astron & Informat, Dali 671003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Ting,Gong, Hongyu,Gao, Zhifu,et al. A study of 80 known pulsars at 185 MHz using MWA incoherent drift-scan observations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2025,543(4):3814-3829. |
| APA | Yu, Ting.,Gong, Hongyu.,Gao, Zhifu.,Zhang, Zhongli.,Wen, Zhigang.,...&An, Tao.(2025).A study of 80 known pulsars at 185 MHz using MWA incoherent drift-scan observations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,543(4),3814-3829. |
| MLA | Yu, Ting,et al."A study of 80 known pulsars at 185 MHz using MWA incoherent drift-scan observations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 543.4(2025):3814-3829. |
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来源：新疆天文台
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