authors: P. Schwartz, S. Gunar, P. Heinzel, B. Schmieder and U. Anzer

title: Systematic study of behaviour of the 2D multi-thread model of
prominence

abstract:
It is already well known from observations that solar prominences are
composed of vertical threads in the horizontal magnetic field. The threads 
are created as follows: Dips in the horizontal part of magnetic loops having 
emerged from the solar surface, are caused by their twisting. Those dips can be 
filled by the coronal plasma which then cools along the field lines. Plasma 
in each dip is in equilibrium between gravitational force acting downward and 
magnetic pressure acting upward due to a vertical component of the magnetic field
occuring due to magnetic dip. Dips filled with the cool plasma in vertically
formed loop system forms the thread. Plasma in the dips can be heated mainly
along the field lines, heat transport across the field lines is much less
effective. We compare statistically the synthetic hydrogen line profiles
calculated by a such fine-structure non-LTE models with observations and
investigate influence of plasma density and orientation of the magnetic field
in respect to the line of sight on the synthetic profile properties.