IAFE 05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
Study of helicity properties of peculiar active regions
Autor/es:
M. C. LÓPEZ FUENTES; C. H. MANDRINI; P. DÉMOULIN
Revista:
Proceedings IAU Symposium 264
Editorial:
Cambridge University Press
Referencias:
Lugar: Cambridge, UK; Año: 2009 vol. S264 p. 102 - 104
ISSN:
1743-9213
Resumen:
Peculiar solar active regions (ARs), such as delta-islands and other high tilt bipoles, are commonly associated with the emergence of severely deformed magnetic flux tubes. Therefore, the study of these ARs provides valuable information on the origin and evolution of magnetic structures in the solar interior. Here, we infer the magnetic helicity properties of the flux tubes associated to a set of peculiar ARs by studying the evolution of photospheric magnetograms (SOHO/MDI) and coronal observations (SOHO/EIT and TRACE) in combination with force-free models of the magnetic field. We discuss how our results relate to different models of the evolution of emerging magnetic flux tubes.
