ShanghaiTech University Knowledge Management System
| Search and detection of northern pulsars in the side lobes of the murchison wide-field array | |
| 2020 | |
| 发表期刊 | 中国科学（物理学 力学 天文学）
 |
| ISSN | 1674-7275 |
| EISSN | 2095-9478 |
| 卷号 | 50期号:10 |
| DOI | 10.1360/SSPMA-2020-0064 |
| 摘要 | New pulsar searching methods can significantly enhance the discovery of new pulsars and observations of single pulsars. This paper searches for pulsars among the observations centered at 185 MHz collected by the Murchison Wide-field Array (MWA). The declinations of two high-latitude northern sky pulsars, identified as J0332+5434 and J2219+4754, exceeded the commonly considered detection limit of MWA (declination <= 30 degrees), and appeared in the side lobes of MWA's incoherent beams. Although the sensitivity is substantially lower in the side lobes than in the main lobe, pulsars are generally very bright at low frequencies, so are observable in the side lobes of low-frequency, wide field of view telescopes. This article describes the search for pulsars with the MWA, and discusses the possibility of further searching and observing the northern sky pulsars in the MWA side lobes. In a simulation study, the MWA detection sensitivity was evaluated at several flux densities of known radio pulsars. We estimated that approximately 30 known northern sky pulsars can be detected in the MWA side lobes. This work promises future pulsar searching by the Square Kilometer Array at low frequencies. |
| 关键词 | pulsar neutron stars radiowave sources |
| URL | 查看原文 |
| 收录类别 | ESCI ; 北大核心 |
| 语种 | 中文 |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Multidisciplinary |
| WOS记录号 | WOS:000575933200007 |
| 出版者 | SCIENCE PRESS |
| 原始文献类型 | Article |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/243247 |
| 专题 | 物质科学与技术学院_硕士生 物质科学与技术学院_特聘教授组_洪晓瑜组 物质科学与技术学院_博士生 |
| 通讯作者 | Zhang ZhongLi |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China; 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China; 3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China; 5.Curtin Univ, Int Ctr Radio Astron Res ICRAR, Perth, WA 6102, Australia |
| 第一作者单位 | 物质科学与技术学院 |
| 推荐引用方式 GB/T 7714 | Gong HongYu,Zhang ZhongLi,Xue MengYao,et al. Search and detection of northern pulsars in the side lobes of the murchison wide-field array[J]. 中国科学（物理学 力学 天文学）,2020,50(10). |
| APA | Gong HongYu.,Zhang ZhongLi.,Xue MengYao.,Hong XiaoYu.,An Tao.,...&Yu Ting.(2020).Search and detection of northern pulsars in the side lobes of the murchison wide-field array.中国科学（物理学 力学 天文学）,50(10). |
| MLA | Gong HongYu,et al."Search and detection of northern pulsars in the side lobes of the murchison wide-field array".中国科学（物理学 力学 天文学） 50.10(2020). |
| 条目包含的文件 | 下载所有文件 | |||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
修改评论
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。