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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60076658:12310/22:43904752

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GC21-16508J" target="_blank" >GC21-16508J: Sub-THz pásmo: nový přístup ke studiu původu slunečních a hvězdných erupcí pomocí pozorování a numerických simulací</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advances in Space Research

ISSN

0273-1177

e-ISSN

1879-1948

Svazek periodika

70

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

3257-3262

Kód UT WoS článku

000877671600008

EID výsledku v databázi Scopus

2-s2.0-85138523477