PMO OpenIR  > 太阳活动的多波段观测研究团组
Analysis of the coronal source of the partially limb-occulted flare on 2002 July 20
Shen, Jin-Hua1,2; Melnikov, Victor1,3; Zhou, Tuan-Hui1; Ji, Hai-Sheng1
2013-08-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
Volume13Issue:8Pages:961-977
AbstractWe carry out a detailed analysis of the X3.5 solar flare that occurred on 2002 July 20, which is the strongest partially limb-occulted flare ever observed by the RHESSI satellite. The main results are: (1) during the main impulsive phase that lasts similar to 10 minutes, the motion of the thermal sources follows a U-shaped trajectory. Non-thermal sources move in a similar way, but in a series of larger zigzags. We further show that the non-thermal sources are actually leading the contraction motion. (2) During the main impulsive phase, X-ray sources at different energies continuously form a loop-like configuration, with the highest energy source (up to similar to 100 keV) and the lowest energy source (down to similar to 10 keV) being located at two ends. The entire loop-like configuration moves in a U-shaped trajectory, while keeping the order of descending energy from highest to lowest during motion. Two non-thermal hard Xray sources with different energies are spatially well separated in the distribution. The unusual complexities of the X-ray emissions in the tenuous solar corona challenge interpretations using bremsstrahlung in a simple magnetic configuration.
KeywordSun: Activity Sun: X-ray Sun: Flares
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordHARD X-RAY ; SOLAR-FLARE ; MAGNETIC RECONNECTION ; PARTICLE-ACCELERATION ; RHESSI OBSERVATIONS ; NOVEMBER 3 ; EMISSION ; LOOPS ; TELESCOPE ; SHRINKAGE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000323688500008
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10042
Collection太阳活动的多波段观测研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Russian Acad Sci, Cent Astron Observ Pulkovo, St Petersburg 196140, Russia
Recommended Citation
GB/T 7714
Shen, Jin-Hua,Melnikov, Victor,Zhou, Tuan-Hui,et al. Analysis of the coronal source of the partially limb-occulted flare on 2002 July 20[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(8):961-977.
APA Shen, Jin-Hua,Melnikov, Victor,Zhou, Tuan-Hui,&Ji, Hai-Sheng.(2013).Analysis of the coronal source of the partially limb-occulted flare on 2002 July 20.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(8),961-977.
MLA Shen, Jin-Hua,et al."Analysis of the coronal source of the partially limb-occulted flare on 2002 July 20".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.8(2013):961-977.
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