Artículo

Evolution and decay of an active region: Magnetic shear, flare and CME activity

Driel Gresztelyi, L. Van; Thompson, B.; Punkett, S.; Démoulin, P.; Aulanier, G.

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Driel Gresztelyi, L. Van, et al. (2000). Evolution and decay of an active region: Magnetic shear, flare and CME activity. Geofísica Internacional; Vol. 39 No. 1, 2000. Recuperado de https://repositorio.unam.mx/contenidos/42390

Descripción del recurso

Autor(es)
Driel Gresztelyi, L. Van; Thompson, B.; Punkett, S.; Démoulin, P.; Aulanier, G.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Evolution and decay of an active region: Magnetic shear, flare and CME activity
Fecha
2012-05-01
Resumen
An activity complex was observed on the solar disk between April, 1996 and February, 1997 that reached its highest level of activity during the birth of AR 7978. Our observations extend over six solar rotations, from the emergence of AR 7978 (July 1996) until the decay and dispersion of its flux (November 1996). Multi-wavelength observations, provided by instruments aboard the Solar and Heliospheric Observatory (SOHO) and the Japanese spacecraft Yohkoh, follow the evolution of the region from the photosphere to the corona. Using full disk magnetograms obtained by the Michelson Doppler Imager (SOHO/MDI) as boundary condition, we calculate the coronal magnetic field and determine its shear by fitting the computed field lines to the observed soft X-ray loops. We discuss the evolution of the coronal field shear and its probable relation to flare and coronal mass ejection activity.
Tema
Solar activity; coronal mass ejections; flares; coronal magnetic field.; Actividad solar; eyecciones de masa coronal; fulguraciones; campo magnético coronal.
Idioma
spa
ISSN
0016-7169

Enlaces