2D non-LTE modelling of a filament observed in the Hα line with the DST/IBIS spectropolarimeter

  title={2D non-LTE modelling of a filament observed in the Hα line with the DST/IBIS spectropolarimeter},
  author={P. Schwartz and S. Gun{\'a}r and J. Jenkins and D. Long and P. Heinzel and D. O. A. Sciences and S. Republic and A. Institute and The Czech Academy of Sciences and Czech Republic and UCL-Mullard Space Science Laboratory and Holmbury St. Mary and Surrey and Uk and D. O. PhysicsAstronomy and C. S. University and Ça and Usa},
  journal={Astronomy and Astrophysics},
  • P. Schwartz, S. Gunár, +15 authors Usa
  • Published 2019
  • Physics
  • Astronomy and Astrophysics
  • Context. We study a fragment of a large quiescent filament observed on May 29, 2017 by the Interferometric BIdimensional Spectropolarimeter (IBIS) mounted at the Dunn Solar Telescope. We focus on its quiescent stage prior to its eruption. Aims. We analyse the spectral observations obtained in the Hα line to derive the thermodynamic properties of the plasma of the observed fragment of the filament. Methods. We used a 2D filament model employing radiative transfer computations under conditions… CONTINUE READING
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