Prominence Formation by Localized Heating

Details Prominence Formation by Localized Heating Prominence Formation by Localized Heating

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...495..485d&link_type=abstract

Astrophysical Journal v.495, p.485

Astronomy and Astrophysics

Astronomy

30

Sun: Corona, Sun: Prominences, Magnetohydrodynamics: Mhd, Sun: Magnetic Fields

Scientific paper

We describe a model for the formation of the cool condensed material that comprises a coronal filament or prominence. Numerical calculations are presented which demonstrate that large condensations form in a coronal loop if the loop satisfies two key requirements: (1) the loop heating must be localized near the chromospheric footpoints, and (2) the loop must have a dipped geometry in order to support the prominence condensation against gravity. We calculate one-dimensional equilibrium solutions for the equations of force and energy balance assuming optically thin radiative losses and a parameterized form for the coronal heating. This physical situation is modeled as a boundary value problem, which we solve numerically using a B-spline collocation scheme. The relation of our solutions to the well-known loop scaling laws is discussed, and the implications of our model for active region and quiescent prominences are discussed.

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