Prominence Height and Vertical Gradient in Magnetic Field

Details Prominence Height and Vertical Gradient in Magnetic Field Prominence Height and Vertical Gradient in Magnetic Field

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000astl...26..322f&link_type=abstract

Astronomy Letters, vol. 26, p. 322-327 (2000)

Astronomy and Astrophysics

Astronomy

12

Scientific paper

The existence of a critical height for quiescent prominences and its relationship to parameters of the magnetic field of photospheric sources are discussed. In the inverse-polarity model, stable equilibrium of a filament with a current is possible only in the region where the external field decreases with height no faster than ~1/h. Calculations of the potential magnetic field above the polarity-inversion line are compared with the observed prominence height. The prominence height is shown to actually depend on the vertical field gradient and does not exceed the level at which the exponent of field decrease is equal to unity.

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