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SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: 16th Latin American Workshop On Plasma Physics, Lawpp 2017 - Conference Proceedings Título del capítulo: Force-free fields in the solar corona and the identification of solar flare sites
Autores UNAM: JULIO JAVIER MARTINELL BENITO;
Autores externos: Idioma: InglésAño de publicación: 2017Palabras clave:
Force-free fields; Solar flares; Magnetic neutral points
Resumen:
The magnetic fields in the solar atmosphere are computed from the
magnetometer data measured in the photosphere using the approximation of
linear force-free fields. The magnetic fields correspond to an active
region where a solar flare erupted at some time and the computations
were made before and after the flare. From the field configuration a
search was made of the possible regions for magnetic reconnection by
making planar cuts at places of large field variations. The potential
reconnection site is characterized by the presence of a neutral point in
the projected field. It is found that these points are not far from the
actual site where the solar flare appeared, even though the linear model
is relatively simple. This analysis is performed for two active regions
with similar results. The force-free parameter alpha is computed from
vector magnetograms in order to asses how far it is from the constant
value required by the linear approximation.
Entidades citadas de la UNAM:
Fuente:
ISBN: 9781538633861 Editorial: Institute of Electrical and Electronics Engineers Inc.
