Exploration of long-period oscillations in an H alpha prominence

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00517248" target="_blank" >RIV/67985815:_____/19:00517248 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1051/0004-6361/201833614" target="_blank" >https://doi.org/10.1051/0004-6361/201833614</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201833614" target="_blank" >10.1051/0004-6361/201833614</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Exploration of long-period oscillations in an H alpha prominence

Popis výsledku v původním jazyce

The aim of the present work is to assemble the two sequences of H alpha observations as a full data set lasting two hours to confirm the existence of oscillations, and determine their nature. After having coaligned the Doppler maps of the two sequences, we use a Scargle periodogram analysis and cosine fitting to compute the periods and the phase of the oscillations in the full data set. We conclude that the prominence does not oscillate as a whole structure but exhibits different areas with their own oscillation periods and characteristics: standing or propagating waves. We discuss the nature of the standing oscillations and the propagating waves. These can be interpreted in terms of gravito-acoustic modes and magnetosonic waves, respectively.

Název v anglickém jazyce

Exploration of long-period oscillations in an H alpha prominence

Popis výsledku anglicky

The aim of the present work is to assemble the two sequences of H alpha observations as a full data set lasting two hours to confirm the existence of oscillations, and determine their nature. After having coaligned the Doppler maps of the two sequences, we use a Scargle periodogram analysis and cosine fitting to compute the periods and the phase of the oscillations in the full data set. We conclude that the prominence does not oscillate as a whole structure but exhibits different areas with their own oscillation periods and characteristics: standing or propagating waves. We discuss the nature of the standing oscillations and the propagating waves. These can be interpreted in terms of gravito-acoustic modes and magnetosonic waves, respectively.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

—

Svazek periodika

623

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

10

Strana od-do

A144

Kód UT WoS článku

000461847700006

EID výsledku v databázi Scopus

2-s2.0-85063748632