Transverse oscillations of a quiescent solar filament observed at the 304 angstrom EUV passband

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00564022" target="_blank" >RIV/67985815:_____/22:00564022 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/22:43904752
Result on the web
<a href="https://hdl.handle.net/11104/0337596" target="_blank" >https://hdl.handle.net/11104/0337596</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.asr.2022.08.064" target="_blank" >10.1016/j.asr.2022.08.064</a>

Result language
angličtina
Original language name
Transverse oscillations of a quiescent solar filament observed at the 304 angstrom EUV passband
Original language description
Quasi-periodic transverse oscillations of a quiescent solar filament based on the H-alpha and the 304 angstrom EUV intensity maps have been studied. Time-distance diagrams of filament intensity variations were produced. The method of the identification of local peaks on the time-distance diagrams allowed us to reveal non-linear transverse oscillations, which were interpreted as a transverse wave propa-gating along the filament with a characteristic period of about 13 min. The relatively small average wave amplitude and well pronounced period are in favour of the quasi-linear kink mode excited in the filament threads, which is modelled as the thin independent magnetic flux tubes. In terms of the phase difference for the propagating wave in two different points of the filament and the dispersion equation for kink modes, the Alfve ' n velocity (approximate to 60 km s(-1)) and the magnetic field (730 G) in the filament threads have been estimated. The nonlinear effects are discussed. (C) 2022 COSPAR. Published by Elsevier B.V.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GC21-16508J" target="_blank" >GC21-16508J: Sub-THz band: a new perspective for studying the origin of solar and stellar flares through observations and numerical simulations</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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