Interstellar scintillation observations for PSR J0835-4510 at 6656 MHz
文献类型：期刊论文
| 作者 | Xu, Yonghua3; Shi, Xun2; Lee, Kejia4,5; Hao, Longfei3; Li, Zhixuan3; Wang, Min3; Yuan, Jianping1 ; Xu, Heng4; Wu, Ziwei4; Jiang, Jinchen4
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| 刊名 | Monthly Notices of the Royal Astronomical Society
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| 出版日期 | 2023-11-01 |
| 卷号 | 526页码:1246-1259 |
| 关键词 | pulsars: individual: PSR J0835-4510 ISM: structure radio continuum: general |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stad2837 |
| 产权排序 | 5 |
| 英文摘要 | Scintillation phenomena of pulsars provide an important tool for studying interstellar scattering screens and their properties. In this paper, we report pulsar scintillation phenomena of the PSR J0835-4510 at multiple epochs between MJD 58592 and MJD 58843 using the Kunming 40 m radio telescope at a centre frequency of 6656 MHz. We have measured the dynamic spectrum, and derived the scintillation time, bandwidth, and secondary spectrum at each observation epoch. For the first time, we report the detection of parabolic arc structure in the secondary spectra of PSR J0835-4510. Parabolic arcs with varying curvatures appear at all our observation epochs. We used both anisotropic and isotropic scattering screen models to fit the annual variations of arc curvature. While both models can fit the arc curvature variations equally well, the anisotropic model also explains the parabolic arc morphology and its time variation. In this model, the scattering is located at a fractional distance of s = 0.35 ± 0.10, or a distance Ds = 0.19 ± 0.03 kpc from the Earth, likely corresponding to the boundary of the Local Bubble. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:001099066200026 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6655]  |
| 专题 | 脉冲星研究团组 |
| 作者单位 | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China 2.South-Western Institute for Astronomy Research (SWIFAR), Yunnan University, Kunming 650500, China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China; 4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; 5.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China; |
| 推荐引用方式 GB/T 7714 | Xu, Yonghua,Shi, Xun,Lee, Kejia,et al. Interstellar scintillation observations for PSR J0835-4510 at 6656 MHz[J]. Monthly Notices of the Royal Astronomical Society,2023,526:1246-1259. |
| APA | Xu, Yonghua.,Shi, Xun.,Lee, Kejia.,Hao, Longfei.,Li, Zhixuan.,...&Cao, Shuo.(2023).Interstellar scintillation observations for PSR J0835-4510 at 6656 MHz.Monthly Notices of the Royal Astronomical Society,526,1246-1259. |
| MLA | Xu, Yonghua,et al."Interstellar scintillation observations for PSR J0835-4510 at 6656 MHz".Monthly Notices of the Royal Astronomical Society 526(2023):1246-1259. |
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来源：新疆天文台
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