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The Frequency-dependent Modulation Features of PSR J1948+3540

文献类型：期刊论文

作者Chang, Kaige1,3; Wang, Na2,3,8; Kou, Feifei2,3,8; Yan, Wenming2,3,8; Yuan, Jianping2,3,8; Dang, Shijun5,6,7; Yao, Jumei2,3,8; Gajjar, Vishal4; Zhou, Xia2,3,8
刊名ASTROPHYSICAL JOURNAL
出版日期2025-06-10
卷号986期号:1页码:105
ISSN号0004-637X
DOI10.3847/1538-4357/add1b6
产权排序2
英文摘要Using observations from the Giant Metrewave Radio Telescope and FAST, we conducted multiwavelength studies on PSR J1948+3540 and analyzed its intensity modulation characteristics in detail. We found that the intensity modulation of this pulsar exhibits broad low-frequency modulation features. The modulation frequency/period is time dependent, but the dominant modulation component varies with the observing frequency. Specifically, at low frequencies, the modulation is dominated by the first half of the middle component, while at high frequencies, it is dominated by the second half of the middle component. Spectral analysis revealed that the intensities of the leading and trailing components vary with the observing frequency, but the middle component does not change significantly. In addition, the polarization analyses reveal that the peak of the radiation intensity is located in the latter half of the middle component, whereas the linear polarization is dominant in the former half. However, due to the low degree of linear polarization, the change of the dominant modulation component with the observed frequency is not caused by the variation in linear polarization. The phenomenon of the dominant modulation component varying with observing frequency has not been reported before and remains difficult to understand within the current theoretical framework.
WOS关键词PULSAR EMISSION ; EMPIRICAL-THEORY ; SUBPULSE MODULATION ; SPECTRAL VARIATION ; RADIO-EMISSION ; GEOMETRY ; BEHAVIOR ; PROFILE ; J0614+2229 ; MECHANISM
资助项目The key Laboratory of Xinjiang Uyghur Autonomous Region[2021000059] ; Key Laboratory of Xinjiang Uyghur Autonomous Region[12203093] ; Natural Science Foundation of China[2022YFA1603104] ; National Key Research and Development Program[2022A03013 - 2] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12273100] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[12041303] ; National Natural Science Foundation of China (NSFC) project ; West Light Foundation of Chinese Academy of Sciences[2021 - XBQNXZ - 027] ; WLFC ; National Key Program for Science and Technology Research and Development[2022YFC2205201] ; National Key Program for Science and Technology Research and Development[2020SKA0120200] ; National SKA Program of China[12288102] ; National Natural Science Foundation of China[2022D01D85] ; National Science Foundation of Xinjiang Uygur Autonomous Region[YSBR-063] ; National Science Foundation of Xinjiang Uygur Autonomous Region[2023TSYCTD0013] ; CAS Project for Young Scientists in Basic Research[(CAS)] ; CAS Project for Young Scientists in Basic Research[xbzg-zdsys-202410] ; CAS Project for Young Scientists in Basic Research[2022-XBQNXZ-015] ; Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001505479900001
出版者IOP Publishing Ltd
资助机构The key Laboratory of Xinjiang Uyghur Autonomous Region ; Key Laboratory of Xinjiang Uyghur Autonomous Region ; Natural Science Foundation of China ; National Key Research and Development Program ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China (NSFC) project ; West Light Foundation of Chinese Academy of Sciences ; WLFC ; National Key Program for Science and Technology Research and Development ; National SKA Program of China ; National Natural Science Foundation of China ; National Science Foundation of Xinjiang Uygur Autonomous Region ; CAS Project for Young Scientists in Basic Research ; Chinese Academy of Sciences
源URL[http://ir.xao.ac.cn/handle/45760611-7/7819]  
专题脉冲星研究团组
通讯作者Wang, Na; Kou, Feifei; Yan, Wenming
作者单位1.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Xinjiang, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
4.Univ Calif Berkeley, Berkeley, CA 94720 USA
5.Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550025, Peoples R China
6.Guizhou Univ, Guizhou Radio Astron Observ, Guiyang 550025, Peoples R China
7.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550025, Peoples R China
8.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Chang, Kaige,Wang, Na,Kou, Feifei,et al. The Frequency-dependent Modulation Features of PSR J1948+3540[J]. ASTROPHYSICAL JOURNAL,2025,986(1):105.
APA Chang, Kaige.,Wang, Na.,Kou, Feifei.,Yan, Wenming.,Yuan, Jianping.,...&Zhou, Xia.(2025).The Frequency-dependent Modulation Features of PSR J1948+3540.ASTROPHYSICAL JOURNAL,986(1),105.
MLA Chang, Kaige,et al."The Frequency-dependent Modulation Features of PSR J1948+3540".ASTROPHYSICAL JOURNAL 986.1(2025):105.

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来源：新疆天文台

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