Artículo
Are CMEs capable of producing Moreton waves? A case study: The 2006 December 6 event
Krause, Gustavo Javier
; Cécere, Mariana Andrea
; Zurbriggen, Ernesto
; Costa, Andrea
; Francile, Carlos Natale; Elaskar, Sergio Amado
Fecha de publicación:
02/2018
Editorial:
Oxford University Press
Revista:
Monthly Notices of the Royal Astronomical Society
ISSN:
0035-8711
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Considering the chromosphere and a stratified corona, we examine, by performing 2D compressible magnetohydrodynamics simulations, the capability of a coronal mass ejection (CME) scenario to drive a Moreton wave. We find that given a typical flux rope (FR) magnetic configuration, in initial pseudo-equilibrium, the larger the magnetic field and the lighter (and hotter) the FR, the larger the amplitude and the speed of the chromospheric disturbance, which eventually becomes aMoreton wave.We present arguments to explain why Moreton waves are much rarer than CME occurrences. In the frame of the present model, we explicitly exclude the action of flares that could be associated with the CME. Analysing the Mach number, we find that only fast magnetosonic shock waves will be able to produce Moreton events. In these cases an overexpansion of the FR is always present and it is the main factor responsible for the Moreton generation. Finally, we show that this scenario can account for the Moreton wave of the 2006 December 6 event (Francile et al. 2013).
Palabras clave:
Sun: Chromosphere
,
Sun: Corona
,
Sun: Coronal Mass Ejections (Cmes)
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos(IATE)
Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Citación
Krause, Gustavo Javier; Cécere, Mariana Andrea; Zurbriggen, Ernesto; Costa, Andrea; Francile, Carlos Natale; et al.; Are CMEs capable of producing Moreton waves? A case study: The 2006 December 6 event; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 474; 1; 2-2018; 770-778
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