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Imaging spectroscopy of solar radio burst fine structures
Kontar, E. P.1; Yu, S.2,3; Kuznetsov, A. A.4; Emslie, A. G.5; Alcock, B.1; Jeffrey, N. L. S.1; Melnik, V. N.6; Bian, N. H.1; Subramanian, P.7
2017-11-15
发表期刊NATURE COMMUNICATIONS
卷号8
摘要Solar radio observations provide a unique diagnostic of the outer solar atmosphere. However, the inhomogeneous turbulent corona strongly affects the propagation of the emitted radio waves, so decoupling the intrinsic properties of the emitting source from the effects of radio wave propagation has long been a major challenge in solar physics. Here we report quantitative spatial and frequency characterization of solar radio burst fine structures observed with the Low Frequency Array, an instrument with high-time resolution that also permits imaging at scales much shorter than those corresponding to radio wave propagation in the corona. The observations demonstrate that radio wave propagation effects, and not the properties of the intrinsic emission source, dominate the observed spatial characteristics of radio burst images. These results permit more accurate estimates of source brightness temperatures, and open opportunities for quantitative study of the mechanisms that create the turbulent coronal medium through which the emitted radiation propagates.
文章类型Article
WOS标题词Science & Technology
资助者STFC consolidated grant(ST/L000741/1) ; STFC consolidated grant(ST/L000741/1) ; NASA's Goddard Space Flight Center(NNX10AT78G) ; NASA's Goddard Space Flight Center(NNX10AT78G) ; National Aeronautics and Space Administration(NNX17AI16G) ; National Aeronautics and Space Administration(NNX17AI16G) ; RFBR grant(15-02-03717) ; RFBR grant(15-02-03717) ; STFC studentship grant ; STFC studentship grant ; ISSI Bern, Switzerland ; ISSI Bern, Switzerland ; STFC consolidated grant(ST/L000741/1) ; STFC consolidated grant(ST/L000741/1) ; NASA's Goddard Space Flight Center(NNX10AT78G) ; NASA's Goddard Space Flight Center(NNX10AT78G) ; National Aeronautics and Space Administration(NNX17AI16G) ; National Aeronautics and Space Administration(NNX17AI16G) ; RFBR grant(15-02-03717) ; RFBR grant(15-02-03717) ; STFC studentship grant ; STFC studentship grant ; ISSI Bern, Switzerland ; ISSI Bern, Switzerland
DOI10.1038/s41467-017-01307-8
关键词[WOS]CORONAL TURBULENCE ; ACTIVE REGIONS ; III BURSTS ; SCATTERING ; PROPAGATION ; EMISSION ; RADIOHELIOGRAPH ; RADIATION ; EVOLUTION ; PLASMA
收录类别SCI
语种英语
资助者STFC consolidated grant(ST/L000741/1) ; STFC consolidated grant(ST/L000741/1) ; NASA's Goddard Space Flight Center(NNX10AT78G) ; NASA's Goddard Space Flight Center(NNX10AT78G) ; National Aeronautics and Space Administration(NNX17AI16G) ; National Aeronautics and Space Administration(NNX17AI16G) ; RFBR grant(15-02-03717) ; RFBR grant(15-02-03717) ; STFC studentship grant ; STFC studentship grant ; ISSI Bern, Switzerland ; ISSI Bern, Switzerland ; STFC consolidated grant(ST/L000741/1) ; STFC consolidated grant(ST/L000741/1) ; NASA's Goddard Space Flight Center(NNX10AT78G) ; NASA's Goddard Space Flight Center(NNX10AT78G) ; National Aeronautics and Space Administration(NNX17AI16G) ; National Aeronautics and Space Administration(NNX17AI16G) ; RFBR grant(15-02-03717) ; RFBR grant(15-02-03717) ; STFC studentship grant ; STFC studentship grant ; ISSI Bern, Switzerland ; ISSI Bern, Switzerland
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000415262500003
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20187
专题射电天文研究部
作者单位1.Univ Glasgow, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
2.New Jersey Inst Technol, Newark, NJ 07102 USA
3.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China
4.Inst Solar Terr Phys, Irkutsk 664033, Russia
5.Western Kentucky Univ, Dept Phys & Astron, Bowling Green, KY 42101 USA
6.Natl Acad Sci Ukraine, Inst Radio Astron, UA-61002 Kharkov, Ukraine
7.Indian Inst Sci Educ & Res, Pune 411008, Maharashtra, India
推荐引用方式
GB/T 7714
Kontar, E. P.,Yu, S.,Kuznetsov, A. A.,et al. Imaging spectroscopy of solar radio burst fine structures[J]. NATURE COMMUNICATIONS,2017,8.
APA Kontar, E. P..,Yu, S..,Kuznetsov, A. A..,Emslie, A. G..,Alcock, B..,...&Subramanian, P..(2017).Imaging spectroscopy of solar radio burst fine structures.NATURE COMMUNICATIONS,8.
MLA Kontar, E. P.,et al."Imaging spectroscopy of solar radio burst fine structures".NATURE COMMUNICATIONS 8(2017).
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