| Profile Variation in PSR B0355+54 over a Narrow Frequency Range | |
Jiang, Shibo1,2,3; Li, Lin1,2; Yuen, Rai2,4; Yuan, Jianping2,4; Yao, Jumei2,4; Shi, Xun5; Xu YH(徐永华)6 ; Chen, Jianling7; Wen, Zhigang2,4
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| 发表期刊 | UNIVERSE
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| 2024-11 | |
| 卷号 | 10期号:11 |
| DOI | 10.3390/universe10110416 |
| 产权排序 | 第6完成单位 |
| 收录类别 | SCI |
| 关键词 | pulsars general-stars neutron-radiation mechanisms non-thermal multi-frequency PSR B0355+54 (PSR J0358+5413) |
| 摘要 | We investigate changes in the shape of the averaged pulse profile in PSR B0355+54 (PSR J0358+5413) based on data obtained at the center frequency of 1250 MHz using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Our dataset consists of 12 non-consecutive observations, each lasting between 1 and 2 h. Considerable variation is observed in the averaged profiles across the observations even though each is folded from thousands of single pulses. Changes in the profile are measured through the ratio (R) between the peak intensities of the leading and trailing components. We find that the averaged pulse profile exhibits significant variation across observations, but distinctive from typical profile mode-changing. By dividing the frequency bandwidth into eight sub-bands, we demonstrate that the shape of the averaged profile undergoes significant evolution with frequency. In general, the changes in R across the sub-bands are different in different observations, but its value is uniform at low frequencies implying a more consistent emission. We demonstrate that the profile stabilization timescale for this pulsar is much longer than commonly suggested for ordinary pulsars, which is likely due to non-uniform and varying arrangement of the emission sources in the emission region. |
| 资助项目 | National Key Research and Development Program of China; National SKA Program of China[2020SKA0120200]; National Key Program for Science and Technology Research and Development[2022YFC2205200]; National Key Program for Science and Technology Research and Development[2022YFC2205201]; National Natural Science Foundation of China (NSFC) project[12288102]; National Natural Science Foundation of China (NSFC) project[12041303]; National Natural Science Foundation of China (NSFC) project[12041304]; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-2]; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments; Ministry of Finance of China; National Science Foundation of Xinjiang Uygur Autonomous Region[2022D01D85]; CAS Project for Young Scientists in Basic Research |
| 项目资助者 | National Key Research and Development Program of China ; National SKA Program of China[2020SKA0120200] ; National Key Program for Science and Technology Research and Development[2022YFC2205200, 2022YFC2205201] ; National Natural Science Foundation of China (NSFC) project[12288102, 12041303, 12041304] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-2] ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments ; Ministry of Finance of China ; National Science Foundation of Xinjiang Uygur Autonomous Region[2022D01D85] ; CAS Project for Young Scientists in Basic Research[YSBR-063, 2023TSYCTD0013] ; [2022YFC2205202] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 射电与天文学 |
| 文章类型 | Article |
| 出版者 | MDPI |
| 出版地 | ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND |
| URL | 查看原文 |
| WOS记录号 | WOS:001366499700001 |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 关键词[WOS] | RADIO-EMISSION ALTITUDES ; PULSAR EMISSION ; MODE ; POLARIZATION ; POLARIMETRY ; DEPENDENCE ; SHAPE |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/27828 |
| 专题 | 射电天文研究组 |
| 作者单位 | 1.School of Physical Science and Technology, Xinjiang University, Urumqi 830046, China; 2.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 830011, China; 3.Guangxi Meteorological Information Center, Guangxi Zhuang Autonomous Region Meteorological Bureau, Nanning 530022, China; 4.Xinjiang Key Laboratory of Radio Astrophysics, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 830011, China; 5.South-Western Institute for Astronomy Research (SWIFAR), Yunnan University, Kunming 650500, China; 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China; 7.Department of Physics & Electronic Engineering, Yuncheng University, Yuncheng 044000, China |
| 推荐引用方式 GB/T 7714 | Jiang, Shibo,Li, Lin,Yuen, Rai,et al. Profile Variation in PSR B0355+54 over a Narrow Frequency Range[J]. UNIVERSE,2024,10(11). |
| APA | Jiang, Shibo.,Li, Lin.,Yuen, Rai.,Yuan, Jianping.,Yao, Jumei.,...&Wen, Zhigang.(2024).Profile Variation in PSR B0355+54 over a Narrow Frequency Range.UNIVERSE,10(11). |
| MLA | Jiang, Shibo,et al."Profile Variation in PSR B0355+54 over a Narrow Frequency Range".UNIVERSE 10.11(2024). |
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| Profile Variation in（591KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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