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Dense magnetized plasma associated with a fast radio burst
文献类型：期刊论文
| 作者 | Masui, Kiyoshi1,2; Lin, Hsiu-Hsien3; Sievers, Jonathan4,5; Anderson, Christopher J.6; Chang, Tzu-Ching7; Chen, Xuelei8,9 ; Ganguly, Apratim10; Jarvis, Miranda11; Kuo, Cheng-Yu7,12; Li, Yi-Chao8
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| 刊名 | NATURE
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| 出版日期 | 2015-12-24 |
| 卷号 | 528期号:7583页码:523-+ |
| 英文摘要 | Fast radio bursts are bright, unresolved, non-repeating, broadband, millisecond flashes, found primarily at high Galactic latitudes, with dispersion measures much larger than expected for a Galactic source(1-7). The inferred all-sky burst rate(8) is comparable to the core-collapse supernova rate(9) out to redshift 0.5. If the observed dispersion measures are assumed to be dominated by the intergalactic medium, the sources are at cosmological distances with redshifts of 0.2 to 1 (refs 10 and 11). These parameters are consistent with a wide range of source models(12-17). One fast burst(6) revealed circular polarization of the radio emission, but no linear polarization was detected, and hence no Faraday rotation measure could be determined. Here we report the examination of archival data revealing Faraday rotation in the fast radio burst FRB 110523. Its radio flux and dispersion measure are consistent with values from previously reported bursts and, accounting for a Galactic contribution to the dispersion and using a model of intergalactic electron density(10), we place the source at a maximum redshift of 0.5. The burst has a much higher rotation measure than expected for this line of sight through the Milky Way and the intergalactic medium, indicating magnetization in the vicinity of the source itself or within a host galaxy. The pulse was scattered by two distinct plasma screens during propagation, which requires either a dense nebula associated with the source or a location within the central region of its host galaxy. The detection in this instance of magnetization and scattering that are both local to the source favours models involving young stellar populations such as magnetars over models involving the mergers of older neutron stars, which are more likely to be located in low-density regions of the host galaxy. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000366991900045 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5500]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada 2.Canadian Inst Adv Res, CIFAR Program Cosmol & Grav, Toronto, ON M5G 1Z8, Canada 3.Carnegie Mellon Univ, Dept Phys, McWilliams Ctr Cosmol, Pittsburgh, PA 15213 USA 4.Univ KwaZulu Natal, Sch Chem & Phys, Astrophys & Cosmol Res Unit, ZA-4001 Durban, South Africa 5.Natl Inst Theoret Phys NITheP, KZN Node, ZA-4001 Durban, South Africa 6.Univ Wisconsin, Dept Phys, Madison, WI 53706 USA 7.Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan 8.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 9.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 10.Univ KwaZulu Natal, Astrophys & Cosmol Res Unit, Sch Math Stat & Comp Sci, ZA-4001 Durban, South Africa |
| 推荐引用方式 GB/T 7714 | Masui, Kiyoshi,Lin, Hsiu-Hsien,Sievers, Jonathan,et al. Dense magnetized plasma associated with a fast radio burst[J]. NATURE,2015,528(7583):523-+. |
| APA | Masui, Kiyoshi.,Lin, Hsiu-Hsien.,Sievers, Jonathan.,Anderson, Christopher J..,Chang, Tzu-Ching.,...&Yadav, Jaswant K..(2015).Dense magnetized plasma associated with a fast radio burst.NATURE,528(7583),523-+. |
| MLA | Masui, Kiyoshi,et al."Dense magnetized plasma associated with a fast radio burst".NATURE 528.7583(2015):523-+. |
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