Artículo
Halpha Moreton waves observed on December 06, 2006. A 2D case study
Fecha de publicación:
04/2013
Editorial:
EDP Sciences
Revista:
Astronomy and Astrophysics
ISSN:
0004-6361
e-ISSN:
1432-0746
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We present high temporal resolution observations of a Moreton wave event detected with the Hα Solar Telescope for Argentina (HASTA) in the Hα line 656.3 nm, on December 6, 2006. The aim is to contribute to the discussion about the nature and triggering mechanisms of Moreton wave events. We describe the HASTA telescope capabilities and the observational techniques. We carried out a detailed analysis to determine the flare onset, the radiant point location, the kinematics of the disturbance and the activation time of two distant filaments. We used a 2D reconstruction of the HASTA and corresponding TRACE observations, together with conventional techniques, to analyze the probable origin of the phenomenon. Results. The kinematic parameters and the probable onset time of the Moreton wave event are determined. A small-scale ejectum and the winking of two remote filaments are analyzed to discuss their relation with the Moreton disturbance. The analysis of the Moreton wave event favors the hypothesis that the phenomenon can be described as the chromospheric imprint of a single fast coronal shock triggered from a single source in association with a coronal mass ejection. Its onset time is concurrent with a Lorentz force peak measured in the photosphere, as stated by other authors. However, the existence of multiple shock waves that were generated almost simultaneously cannot be discarded.
Palabras clave:
SHOCK WAVES
,
IMAGE PROCESSING
,
SUN CHROMOSPHERE
,
SUN CORONA
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IDIT)
Articulos de INSTITUTO DE ESTUDIOS AVANZADOS EN INGENIERIA Y TECNOLOGIA
Articulos de INSTITUTO DE ESTUDIOS AVANZADOS EN INGENIERIA Y TECNOLOGIA
Citación
Francile, Carlos Natale; Costa, Andrea; Luoni, Maria Luisa; Elaskar, Sergio Amado; Halpha Moreton waves observed on December 06, 2006. A 2D case study; EDP Sciences; Astronomy and Astrophysics; 552; 4-2013; 1-11
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