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On the double-plane plasma lensing

文献类型：期刊论文

作者Er, Xinzhong1; Wagner, Jenny2; Mao, Shude3,4
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2021-12-15
卷号509期号:4页码:5872-5881
ISSN号0035-8711
关键词gravitational lensing: strong Interstellar medium
DOI10.1093/mnras/stab3278
英文摘要Plasma lensing is the refraction of low-frequency electromagnetic rays due to cold free electrons in the universe. For sources at a cosmological distance, there is observational evidence of elongated, complex plasma structures along the line of sight requiring a multi-lens-plane description. To investigate the limits of single-plane plasma lensing, we set up a double-plane lens with a projected Gaussian electron density in each lens plane. We compare double-plane scenarios with corresponding effective single-plane configurations. Our results show how double-plane lenses can be distinguished from single-plane lenses by observables, i.e. resolved multiple image positions, relative magnifications, time delays, and pulse shapes. For plasma lensing of fast radio bursts, the observed pulse shape may be dominated by the lensing effect, allowing us to neglect the intrinsic source pulse shape to distinguish different lensing configurations. The time-domain observables turn out to be the most salient features to tell multi- and single-plane lenses apart.
WOS关键词EXTREME SCATTERING EVENTS ; FAST RADIO-BURSTS ; INTERSTELLAR SCATTERING ; PULSAR SCINTILLATION ; REIONIZATION HISTORY ; DISPERSION MEASURE ; PARABOLIC ARCS ; CLASSIFICATION ; CAUSTICS ; MODELS
资助项目NSFC[11873006] ; NSFC[11821303] ; NSFC[11761131004] ; NSFC[11761141012] ; National Key Research and Development Program of China[2018YFA0404501]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000833030600006
资助机构NSFC ; NSFC ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; NSFC ; NSFC ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; NSFC ; NSFC ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; NSFC ; NSFC ; National Key Research and Development Program of China ; National Key Research and Development Program of China
源URL[http://ir.bao.ac.cn/handle/114a11/87743]  
专题中国科学院国家天文台
通讯作者Er, Xinzhong; Wagner, Jenny
作者单位1.Yunnan Univ, South Western Inst Astron Res, Kunming, Yunnan, Peoples R China
2.Friedhofstr 17, D-66280 Sulzbach, Germany
3.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Er, Xinzhong,Wagner, Jenny,Mao, Shude. On the double-plane plasma lensing[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,509(4):5872-5881.
APA Er, Xinzhong,Wagner, Jenny,&Mao, Shude.(2021).On the double-plane plasma lensing.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,509(4),5872-5881.
MLA Er, Xinzhong,et al."On the double-plane plasma lensing".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 509.4(2021):5872-5881.

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来源：国家天文台

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