Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010arep...54...86s&link_type=abstract
Astronomy Reports, Volume 54, Issue 1, pp.86-95
Astronomy and Astrophysics
Astronomy
2
Scientific paper
The new approach to the modeling of quiescent solar prominences is proposed. We solve the inverse magnetohydrostatic problem, when the pressure, density and temperature of plasma in the filament are calculated from the equilibrium equations using the given magnetic structure (magnetic flux function is proposed to be known). The new exact nonlinear solutions for dense ( n ≈ (2-3) × 1011 cm-3) and cold ( T ≈ (5-10) × 103 K) filaments, embedded in the plan, vertically stratified atmosphere (hot solar corona) free of magnetic field, are derived. The filaments are stretched along the horizontal axis y(the translational symmetry is assumed: ∂/∂y = 0) and located parallel to and above a photospheric, magnetic polarity reversal line. The magnetic field lines have a structure of magnetic flux rope with helical field lines in three-dimensional space; the strength of magnetic field falls rapidly with distance from a rope axis. No external longitudinal magnetic field is needed to equilibrate the prominence. The net electric current along the filament is equal to zero. The model of magnetic arcade with the deflection (sag) on the top, proposed by Pikelner (1971) as a basic form of normal prominence, is calculated also using the method proposed. It is shown that such magnetic arcade, having the magnetic field strength of few gauss only, can effectively maintain the equilibrium of cool dense filament at the heights about 50-60 Mm.
No associations
LandOfFree
The structure of solar filaments. Prominences in the corona free from external magnetic field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The structure of solar filaments. Prominences in the corona free from external magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The structure of solar filaments. Prominences in the corona free from external magnetic field will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1888967