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Distinct propagating fast wave trains associated with flaring energy releases
Yuan, D1; Shen YD(申远灯)2; Liu Y(刘煜)2; Nakariakov, VM1,3; Tan, B4; Huang, J4; Yuan, D (reprint author), Univ Warwick, Dept Phys, Ctr Fus Space & Astrophys, Coventry CV4 7AL, W Midlands, England.
发表期刊ASTRONOMY & ASTROPHYSICS
2013-06
卷号554
DOI10.1051/0004-6361/201321435
产权排序第2完成单位
收录类别SCI ; EI
关键词Sun: Atmosphere Sun: Corona Sun: Uv Radiation Sun: Oscillations Sun: Flares Sun: Radio Radiation
摘要Context. Large-scale fast waves with perturbation of the EUV emission intensity are well resolved in both temporal and spatial scale by SDO/AIA. These waves are prone to propagate along the magnetic field line. Aims. We aim to probe the link between propagating fast wave trains and flaring energy releases. By measuring the wave parameters, we reveal their nature and investigate the potential to diagnose the energy source and waveguide. Methods. The spatial and temporal evolution of the wave amplitude and propagating speed are studied. The correlation of individual wave trains with flare-generated radio bursts is tested. Results. The propagating wave pattern comprises distinct wave trains with varying periods and wavelengths. This characteristic signature is consistent with the patterns formed by waveguide dispersion, when different spectral components propagate at different phase and group speeds. The wave train releases are found to be highly correlated in start time with the radio bursts emitted by the non-thermal electrons that were accelerated in bursty energy releases. The wave amplitude is seen to reach the maximum midway during its course. This can be caused by a combined effect of the waveguide spread in the transverse direction and density stratification. The transverse amplitude distribution perpendicular to the wave vector is found to follow approximately a Gaussian profile. The spatial structure is consistent with the kink mode that is polarised along the line-of-sight. The propagating speed is subject to deceleration from similar to 735-845 km s(-1) to similar to 600 km s(-1). This could be caused by the decrease in the local Alfven speed and/or the projection effect.
项目资助者RadioSun project [PIRSES-GA-2011-295272] ; European Research Council [321141] ; Natural Science Foundation of China [11073050] ; Ministry of Education and Science of the Russian Federation [8524] ; Kyung Hee University International Scholarship
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6361
URL查看原文
WOS记录号WOS:000320444200142
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MAGNETICALLY STRUCTURED ATMOSPHERE ; CORONAL LOOP OSCILLATIONS ; SLOW MAGNETOACOUSTIC WAVES ; SOLAR CORONA ; MAGNETOSONIC WAVES ; TIME SIGNATURES ; RADIO-EMISSION ; SAUSAGE MODES ; SEISMOLOGY ; TADPOLES
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7191
专题选址与日冕观测组
通讯作者Yuan, D (reprint author), Univ Warwick, Dept Phys, Ctr Fus Space & Astrophys, Coventry CV4 7AL, W Midlands, England.
作者单位1.Centre for Fusion, Space and Astrophysics, Department of PhysicsUniversity of Warwick, Coventry CV4 7AL, UK
2.Yunnan Astronomical Observatory, Chinese Academy of Sciences, PO Box 110, Kunming 650011, PR China
3.Central Astronomical Observatory at Pulkovo of the Russian Academy of Sciences, 196140 St Petersburg, Russia
4.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, PR China
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Yuan, D,Shen YD,Liu Y,et al. Distinct propagating fast wave trains associated with flaring energy releases[J]. ASTRONOMY & ASTROPHYSICS,2013,554.
APA Yuan, D.,Shen YD.,Liu Y.,Nakariakov, VM.,Tan, B.,...&Yuan, D .(2013).Distinct propagating fast wave trains associated with flaring energy releases.ASTRONOMY & ASTROPHYSICS,554.
MLA Yuan, D,et al."Distinct propagating fast wave trains associated with flaring energy releases".ASTRONOMY & ASTROPHYSICS 554(2013).
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