Gravitational instability of solar prominence threads I. Curved magnetic fields without dips
A. Adrover-González,
J. Terradas,
R. Oliver
et al.
Abstract:Context. Prominence threads are dense and cold structures lying on curved magnetic fields that can be suspended in the solar atmosphere against gravity. Aims. The gravitational stability of threads, in the absence of non-ideal effects, is comprehensively investigated in the present work by means of an elementary but effective model. Methods. Based on purely hydrodynamic equations in one spatial dimension and applying line-tying conditions at the footpoints of the magnetic field lines, we derive analytical expr… Show more
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