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Spectral Diagnostics of Cool Flare Loops Observed by the SST. I. Inversion of the Ca parallel to 8542 angstrom and H beta Lines
- 1.0520545 - ASÚ 2020 RIV US eng J - Journal Article
Koza, J. - Kuridze, D. - Heinzel, Petr - Jejčič, S. - Morgan, H. - Zapiór, Maciej
Spectral Diagnostics of Cool Flare Loops Observed by the SST. I. Inversion of the Ca parallel to 8542 angstrom and H beta Lines.
Astrophysical Journal. Roč. 885, č. 2 (2019), č. článku 154. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA ČR(CZ) GA19-17102S
Institutional support: RVO:67985815
Keywords : solar activity * solar flare spectra * stellar flares
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.746, year: 2019
Method of publishing: Limited access
https://doi.org/10.3847/1538-4357/ab4426
In this paper we employ unique observations of the SOL2017-09-10T16:06 X8.2-class flare which produced an extended arcade of loops. The Swedish 1 m Solar Telescope made a series of spectral images of the cool off-limb loops in the Ca ii & xfffd 8542 ? and the hydrogen H? lines. Our focus is on the loop apices. Non-local thermal equilibrium (non-LTE - i.e., departures from LTE) spectral inversion is achieved through the construction of extended grids of models covering a realistic range of plasma parameters.
Permanent Link: http://hdl.handle.net/11104/0305205
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