On the Polarized Absorption Lines in Gamma-Ray Burst Optical Afterglows
文献类型:期刊论文
作者 | Mao JR(毛基荣)1,2,3; Britto, R. J.4; Buckley, D. A. H.5; Covino, S.6; D'Avanzo, P.6; Kuin, N. P. M.7 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2021-06 |
卷号 | 914期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/abfdc6 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | Spectropolarimetric measurements of gamma-ray burst (GRB) optical afterglows contain polarization information for both continuum and absorption lines. Based on the Zeeman effect, an absorption line in a strong magnetic field is polarized and split into a triplet. In this paper, we solve the polarization radiative transfer equations of the absorption lines, and obtain the degree of linear polarization of the absorption lines as a function of the optical depth. In order to effectively measure the degree of linear polarization for the absorption lines, a magnetic field strength of at least 10(3) G is required. The metal elements that produce the polarized absorption lines should be sufficiently abundant and have large oscillation strengths or Einstein absorption coefficients. We encourage both polarization measurements and high-dispersion observations of the absorption lines in order to detect the triplet structure in early GRB optical afterglows. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | MAGNETIC WHITE-DWARFS ; PROMPT EMISSION ; 1ST DETECTION ; LIGHT CURVES ; GRB 041219A ; EVOLUTION ; FIELD ; RECONSTRUCTION ; SPECTROSCOPY ; SPECTRA |
资助项目 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11673062] ; Oversea Talent Program of Yunnan Province ; National Research Foundation (NRF) of South AfricaNational Research Foundation - South Africa ; UK Space Agency |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000665541400001 |
资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11673062] ; Oversea Talent Program of Yunnan Province ; National Research Foundation (NRF) of South AfricaNational Research Foundation - South Africa ; UK Space Agency |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24437] |
专题 | 云南天文台_丽江天文观测站(南方基地) 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Mao JR(毛基荣) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, People's Republic of China; jirongmao@mail.ynao.ac.cn; 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China; 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, People's Republic of China; 4.Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa; 5.South African Astronomical Observatory, P.O. Box 9, Observatory Road, Observatory 7935, Cape Town, South Africa; 6.Brera Astronomical Observatory, via Bianchi 46, I-23807, Merate (LC), Italy; 7.Mullard Space Science Laboratory, Department of Space and Climate Sciences, University College London, Holmbury St. Mary, Dorking, RH5 6NT, UK |
推荐引用方式 GB/T 7714 | Mao JR,Britto, R. J.,Buckley, D. A. H.,et al. On the Polarized Absorption Lines in Gamma-Ray Burst Optical Afterglows[J]. ASTROPHYSICAL JOURNAL,2021,914(2). |
APA | Mao JR,Britto, R. J.,Buckley, D. A. H.,Covino, S.,D'Avanzo, P.,&Kuin, N. P. M..(2021).On the Polarized Absorption Lines in Gamma-Ray Burst Optical Afterglows.ASTROPHYSICAL JOURNAL,914(2). |
MLA | Mao JR,et al."On the Polarized Absorption Lines in Gamma-Ray Burst Optical Afterglows".ASTROPHYSICAL JOURNAL 914.2(2021). |
入库方式: OAI收割
来源:云南天文台
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