Some dynamical aspects of a quiescent filament

Details Some dynamical aspects of a quiescent filament Some dynamical aspects of a quiescent filament

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...197..281s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 197, no. 1-2, May 1988, p. 281-288.

Astronomy and Astrophysics

Astrophysics

12

Coronal Loops, Magnetohydrodynamics, Solar Magnetic Field, Solar Prominences, Carbon, Chromosphere, H Alpha Line, Magnetohydrodynamic Stability

Scientific paper

A typical quiescent filament was observed on the disk in the Hα and C IV lines during a period of approximately one hour. Vertical velocities (<2.5 km s-1) with a time scale of 5 min and a spatial scale of a few tens of seconds of arc were detected in Hα, and associated with microturbulence in both lines. The C IV observations correlated well with those in Hα, and showed no indication of material heating from Hα to C IV temperatures. Two mechanisms to explain these observations are proposed: mass motion along twisted magnetic field or instabilities triggering waves along the filament.

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