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| Paper: |
Non-LTE Inversion of Spectropolarimetric and Spectroscopic Observations of a Small Active-region Filament Observed at the VTT |
| Volume: |
504, Coimbra Solar Physics Meeting: Ground-based Solar Observations in the Space Instrumentation Era |
| Page: |
205 |
| Authors: |
Schwartz, P.; Balthasar, H.; Kuckein, C.; Koza, J.; Gömöry, P.; Rybák, J.; Kučera, A.; Heinzel, P. |
| Abstract: |
An active region mini-filament was observed by VTT simultaneously in the HeI 10 830 Å triplet by the TIP 1 spectropolarimeter, in Hα by the TESOS Fabry-Pérot interferometer,
and in Ca II 8542 Å by the VTT spectrograph. The spectropolarimetric data were inverted using the HAZEL code
and Hα profiles were modelled solving a NLTE radiative transfer in a simple isobaric and isothermal 2D slab
irradiated both from bottom and sides. It was found that the mini-filament is composed of
horizontal fluxtubes, along which the cool plasma of T∼10 000 K can flow by very large – even supersonic –
velocities. |
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