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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
Source PublicationASTRONOMY & ASTROPHYSICS
2013-06
Volume554
DOI10.1051/0004-6361/201321435
Contribution Rank第2完成单位
Indexed BySCI ; EI
KeywordSun: Atmosphere Sun: Corona Sun: Uv Radiation Sun: Oscillations Sun: Flares Sun: Radio Radiation
Abstract

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.

Funding ProjectRadioSun 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
Funding OrganizationRadioSun 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
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
WOS IDWOS:000320444200142
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMAGNETICALLY STRUCTURED ATMOSPHERE ; CORONAL LOOP OSCILLATIONS ; SLOW MAGNETOACOUSTIC WAVES ; SOLAR CORONA ; MAGNETOSONIC WAVES ; TIME SIGNATURES ; RADIO-EMISSION ; SAUSAGE MODES ; SEISMOLOGY ; TADPOLES
EI Accession Number20132616451552
EI KeywordsMagnetic levitation vehicles
EI Classification Number714.3Waveguides
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7191
Collection选址与日冕观测组
Corresponding AuthorYuan, D
Affiliation1.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
Recommended Citation
GB/T 7714
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,&Huang, J.(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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