Solar filaments as tracers of subsurface processes

Authors
Citation
Dm. Rust, Solar filaments as tracers of subsurface processes, J ASTROPHYS, 21(3-4), 2000, pp. 177-183
Citations number
29
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
JOURNAL OF ASTROPHYSICS AND ASTRONOMY
ISSN journal
0250-6335 → ACNP
Volume
21
Issue
3-4
Year of publication
2000
Pages
177 - 183
Database
ISI
SICI code
0250-6335(200009/12)21:3-4<177:SFATOS>2.0.ZU;2-B
Abstract
Solar filaments are discussed in terms of two contrasting paradigms. The st andard paradigm is that filaments are formed by condensation of coronal pla sma into magnetic fields that are twisted or dimpled as a consequence of mo tions of the fields' sources in the photosphere. According to a new paradig m, filaments form in rising, twisted flux ropes and are a necessary interme diate stage in the transfer to interplanetary space of dynamo-generated mag netic flux. It is argued that the accumulation of magnetic helicity in fila ments and their coronal surroundings leads to filament eruptions and corona l mass ejections. These ejections relieve the Sun of the flux generated by the dynamo and make way for the flux of the next cycle.