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Unusual Emissions at Various Energies Prior to the Impulsive Phase of the Large Solar Flare and Coronal Mass Ejection of 4 November 2003
Kaufmann, Pierre1,2; Holman, Gordon D.3; Su, Yang3,4,5; Guillermo Gimenez de Castro, C.1; Correia, Emilia1,6; Fernandes, Luis O. T.1; de Souza, Rodney V.1; Marun, Adolfo7; Pereyra, Pablo7
2012-08-01
Source PublicationSOLAR PHYSICS
ISSN0038-0938
Volume279Issue:2Pages:465-475
AbstractThe GOES X28 flare of 4 November 2003 was the largest ever recorded in its class. It produced the first evidence for two spectrally separated emission components, one at microwaves and the other in the THz range of frequencies. We analyzed the pre-flare phase of this large flare, twenty minutes before the onset of the major impulsive burst. This period is characterized by unusual activity in X-rays, sub-THz frequencies, H alpha, and microwaves. The CME onset occurred before the onset of the large burst by about 6 min. It was preceded by pulsations of 3 -aEuro parts per thousand 5 s periods at sub-THz frequencies together with X-ray and microwave enhancements. The sub-THz pulsations faded out as impulsive bursts were detected at 100 -aEuro parts per thousand 300 keV and 7 GHz, close to the time of the first H alpha brightening and the CME onset. The activities detected prior to and at the CME onset were located nearly 2 arcmin south of the following large flare, suggesting they were separate events. This unusual activity brings new clues to understanding the complex energy buildup mechanisms prior to the CME onset, occurring at a distinct location and well before the major flare that exploded afterwards.
KeywordCoronal Mass Ejections (Cmes) Cme Precursors Solar Flares Sub-thz Emissions X-ray Emissions
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11207-012-0040-7
WOS KeywordCMES ; MICROWAVE ; BURSTS ; PULSATIONS ; INITIATION ; RELEASE ; REGIONS ; MODELS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000306440800009
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8113
Collection紫金山天文台青海观测站
Affiliation1.Univ Presbiteriana Mackenzie, Escola Engn, CRAAM, BR-01302970 Sao Paulo, Brazil
2.Univ Estadual Campinas, CCS, BR-13083970 Campinas, SP, Brazil
3.NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
4.Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA
5.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
6.Inst Nacl Pesquisas Espaciais, BR-12201970 Sao Jose Dos Campos, SP, Brazil
7.Consejo Nacl Invest Cient & Tecn, San Juan, Argentina
Recommended Citation
GB/T 7714
Kaufmann, Pierre,Holman, Gordon D.,Su, Yang,et al. Unusual Emissions at Various Energies Prior to the Impulsive Phase of the Large Solar Flare and Coronal Mass Ejection of 4 November 2003[J]. SOLAR PHYSICS,2012,279(2):465-475.
APA Kaufmann, Pierre.,Holman, Gordon D..,Su, Yang.,Guillermo Gimenez de Castro, C..,Correia, Emilia.,...&Pereyra, Pablo.(2012).Unusual Emissions at Various Energies Prior to the Impulsive Phase of the Large Solar Flare and Coronal Mass Ejection of 4 November 2003.SOLAR PHYSICS,279(2),465-475.
MLA Kaufmann, Pierre,et al."Unusual Emissions at Various Energies Prior to the Impulsive Phase of the Large Solar Flare and Coronal Mass Ejection of 4 November 2003".SOLAR PHYSICS 279.2(2012):465-475.
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