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Artículo

Unusual Emissions at Various Energies Prior to the Impulsive Phase of the Large Solar Flare and Coronal Mass Ejection of 4 November 2003

Kaufmann, Pierre; Holman, Gordon D.; Su, Yang; de Castro, C. Guillermo Gimenez; Correia, Emilia; Fernandes, Luis O. T.; de Souza, Rodney V.; Marun, Adolfo HectorIcon ; Pereyra, Pablo FlorencioIcon
Fecha de publicación: 08/2012
Editorial: Springer
Revista: Solar Physics
ISSN: 0038-0938
e-ISSN: 1573-093X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Astronomía

Resumen

The 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, Hα, and microwaves. The CME onset occurred before the onset of the large burst by about 6 min. It was preceded by pulsations of 3 - 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 - 300 keV and 7 GHz, close to the time of the first Hα 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.
Palabras clave: Cme Precursors , Coronal Mass Ejections (Cmes) , Solar Flares , Sub-Thz Emissions , X-Ray Emissions
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/69200
DOI: http://dx.doi.org/10.1007/s11207-012-0040-7
URL: https://link.springer.com/article/10.1007%2Fs11207-012-0040-7
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Articulos de COMPLEJO ASTRONOMICO "EL LEONCITO"
Citación
Kaufmann, Pierre; Holman, Gordon D.; Su, Yang; de Castro, C. Guillermo Gimenez; Correia, Emilia; 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; Springer; Solar Physics; 279; 2; 8-2012; 465-475
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