Interstellar scintillation observations for PSR J0835-4510 at 6656 MHz | |
Xu YH(徐永华)5; Shi, Xun4; Lee, Kejia2,3; Hao LF(郝龙飞)5; Li ZX(李志玄)5; Wang M(汪敏)5; Yuan, Jianping1; Xu, Heng2; Wu, Ziwei2; Jiang, Jinchen2 | |
刊名 | Monthly Notices of the Royal Astronomical Society |
2023-11-01 | |
卷号 | 526期号:1页码:1246-1259 |
关键词 | pulsars: individual: PSR J0835−451 ISM: structure radio continuum: general |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnras/stad2837 |
产权排序 | 第1完成单位 |
文献子类 | Journal article (JA) |
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. © 2023 The Author(s). |
学科主题 | 天文学 ; 射电天文学 |
URL标识 | 查看原文 |
资助项目 | National Natural Science Foundation of China[12063003] ; National Natural Science Foundation of China[12073076] ; National Natural Science Foundation of China[12173087] ; National Natural Science Foundation of China[12373025] ; National Key Research and Development Program of China[2022YFC2205203] |
语种 | 英语 |
资助机构 | National Natural Science Foundation of China[12063003, 12073076, 12173087, 12373025] ; National Key Research and Development Program of China[2022YFC2205203] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26368] |
专题 | 云南天文台_射电天文研究组 |
作者单位 | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, 830011, China 2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China; 3.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, 100871, China; 4.South-Western Institute for Astronomy Research (SWIFAR), Yunnan University, Kunming, 650500, China; 5.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, China; |
推荐引用方式 GB/T 7714 | Xu YH,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(1):1246-1259. |
APA | Xu YH.,Shi, Xun.,Lee, Kejia.,Hao LF.,Li ZX.,...&Cao S.(2023).Interstellar scintillation observations for PSR J0835-4510 at 6656 MHz.Monthly Notices of the Royal Astronomical Society,526(1),1246-1259. |
MLA | Xu YH,et al."Interstellar scintillation observations for PSR J0835-4510 at 6656 MHz".Monthly Notices of the Royal Astronomical Society 526.1(2023):1246-1259. |
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