The vertical structure of arch filament systems in solar emerging flux regions

Details The vertical structure of arch filament systems in solar emerging flux regions The vertical structure of arch filament systems in solar emerging flux regions

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...333..420c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 333, Oct. 1, 1988, p. 420-426.

Astronomy and Astrophysics

Astrophysics

40

Solar Flux, Solar Magnetic Field, Solar Prominences, Vertical Distribution, Absorption Spectra, H Alpha Line, Photosphere, Radial Velocity, Solar Atmosphere

Scientific paper

The paper studies the vertical velocity of arch filaments in emerging flux regions by measuring their proper motion near the limb in H-alpha filtergrams and their radial velocity near the disk center in H-alpha spectrograms. Both show that arch filaments rise at a velocity between 10 and 15 km/s. The possible mechanisms producing this high velocity are discussed. None of them is satifactory, but it appears that the unloading of the arches by outflow must play a role. From the strength of H-alpha emission and D3 absorption, the temperature of arch filaments is estimated at 6000-15,000 K and the density at 10 to the 11th-12th/cu cm.

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