Non-LTE Inversion of Spectropolarimetric and Spectroscopic Observations of a Small Active-region Filament Observed at the VTT

0461353 - ASÚ 2017 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Schwartz, P. - Balthasar, H. - Kuckein, C. - Koza, J. - Gömöry, P. - Rybák, J. - Kučera, A. - Heinzel, Petr
Non-LTE Inversion of Spectropolarimetric and Spectroscopic Observations of a Small Active-region Filament Observed at the VTT.
Ground-based solar observations in the space instrumentation ERA. San Francisco: Astronomical Society of the Pacific, 2016 - (Dorotovič, I.), s. 205-208. ASP Conference Series, 504. ISBN 978-1-58381-892-3.
[Ground-based solar observations in the space instrumentation ERA. Coimbra (PT), 05.10.2015-09.10.2015]
Institucionální podpora: RVO:67985815
Klíčová slova: mini-filament * pectropolarimetric observation * spectroscopic observation
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

An active region mini-filament was observed by VTT simultaneously in the He r10 830 angstrom triplet by the TIP 1 spectropolarimeter, in H alpha by the TESOS FabryPerot interferometer, and in Ca n 8542 angstrom by the VTT spectrograph. The spectropolarimetric data were inverted using the HAZEL code and H alpha 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 similar to 10 000 K can flow by very large even supersonic - velocities.
Trvalý link: http://hdl.handle.net/11104/0260968