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Profile Variation in PSR B0355+54 over a Narrow Frequency Range

文献类型：期刊论文

作者Jiang, Shibo1,2,3; Li, Lin1,2; Yuen, Rai2,4; Yuan, Jianping2,4; Yao, Jumei2,4; Shi, Xun5; Xu, Yonghua6; Chen, Jianling7; Wen, Zhigang2,4
刊名UNIVERSE
出版日期2024-11-01
卷号10期号:11页码:416
关键词pulsars general-stars neutron-radiation mechanisms non-thermal multi-frequency PSR B0355+54 (PSR J0358+5413)
DOI10.3390/universe10110416
产权排序2
英文摘要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.
WOS关键词RADIO-EMISSION ALTITUDES ; PULSAR EMISSION ; MODE ; POLARIZATION ; POLARIMETRY ; DEPENDENCE ; SHAPE
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[YSBR-063] ; CAS Project for Young Scientists in Basic Research[2023TSYCTD0013] ; [2022YFC2205202]
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:001366499700001
出版者MDPI
资助机构National Key Research and Development Program of China ; National SKA Program of China ; National Key Program for Science and Technology Research and Development ; National Natural Science Foundation of China (NSFC) project ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments ; Ministry of Finance of China ; National Science Foundation of Xinjiang Uygur Autonomous Region ; CAS Project for Young Scientists in Basic Research
源URL[http://ir.xao.ac.cn/handle/45760611-7/7242]  
专题脉冲星研究团组
科研仪器设备产出_我台利用FAST观测数据文章
通讯作者Li, Lin; Yuen, Rai
作者单位1.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China
2.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1-St, Urumqi 830011, Peoples R China
3.Guangxi Zhuang Autonomous Reg Meteorol Bur, Guangxi Meteorol Informat Ctr, Nanning 530022, Peoples R China
4.Chinese Acad Sci, Xinjiang Key Lab Radio Astrophys, 150 Sci 1-St, Urumqi 830011, Peoples R China
5.Yunnan Univ, South Western Inst Astron Res SWIFAR, Kunming 650500, Peoples R China
6.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
7.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng 044000, Peoples R 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):416.
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),416.
MLA Jiang, Shibo,et al."Profile Variation in PSR B0355+54 over a Narrow Frequency Range".UNIVERSE 10.11(2024):416.

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