Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...316..201w&link_type=abstract
Astronomy and Astrophysics, v.316, p.201-214
Astronomy and Astrophysics
Astrophysics
22
Sun: Filament Activation, Sun: Magnetic Fields
Scientific paper
The morphology and velocity patterns of a disturbing filament in an active region, and the evolution of its surrounding magnetic fields are described in this paper. The disturbance is characterized by vigorous loosening rotation and upward motion. It starts at sites of new emerging flux and cancelling magnetic features beneath the filament, and where microflares take place. In the filament environment, two small emerging flux regions and seven cancelling magnetic features are identified. Major disturbance is associated with flux cancellation at several sites, underlying the central part of the filament. We suggest that the surrounding magnetic fields of the filament and the magnetic fields in the filament have been partly reconnected at the photospheric level. This results in a complicated magnetic topology, and appears to be the cause of the filament activation.
Martin Sara F.
Shi Zhengwei
Wang Jeffrey
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