IRIS observations of chromospheric heating by acoustic waves in solar quiet and active regions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00547574" target="_blank" >RIV/67985815:_____/21:00547574 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10436445

Výsledek na webu

<a href="https://doi.org/10.1051/0004-6361/202140344" target="_blank" >https://doi.org/10.1051/0004-6361/202140344</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202140344" target="_blank" >10.1051/0004-6361/202140344</a>

Jazyk výsledku

angličtina

Název v původním jazyce

IRIS observations of chromospheric heating by acoustic waves in solar quiet and active regions

Popis výsledku v původním jazyce

To study the heating of solar chromospheric magnetic and nonmagnetic regions by acoustic and magnetoacoustic waves, the deposited acoustic-energy flux derived from observations of strong chromospheric lines is compared with the total integrated radiative losses.nObserved waves propagate upward at supersonic speed. In the quiet chromosphere, the deposited acoustic flux is sufficient to balance the radiative losses and maintain the semi-empirical temperatures in the layers under study. In the active-region chromosphere, the comparison shows that the contribution of acoustic-energy flux to the radiative losses is only 10-30%.Conclusions. Acoustic and magnetoacoustic waves play an important role in the chromospheric heating, depositing a main part of their energy in the chromosphere. Acoustic waves compensate for a substantial fraction of the chromospheric radiative losses in quiet regions. In active regions, their contribution is too small to balance the radiative losses and the chromosphere has to be heated by other mechanisms.

Název v anglickém jazyce

IRIS observations of chromospheric heating by acoustic waves in solar quiet and active regions

Popis výsledku anglicky

To study the heating of solar chromospheric magnetic and nonmagnetic regions by acoustic and magnetoacoustic waves, the deposited acoustic-energy flux derived from observations of strong chromospheric lines is compared with the total integrated radiative losses.nObserved waves propagate upward at supersonic speed. In the quiet chromosphere, the deposited acoustic flux is sufficient to balance the radiative losses and maintain the semi-empirical temperatures in the layers under study. In the active-region chromosphere, the comparison shows that the contribution of acoustic-energy flux to the radiative losses is only 10-30%.Conclusions. Acoustic and magnetoacoustic waves play an important role in the chromospheric heating, depositing a main part of their energy in the chromosphere. Acoustic waves compensate for a substantial fraction of the chromospheric radiative losses in quiet regions. In active regions, their contribution is too small to balance the radiative losses and the chromosphere has to be heated by other mechanisms.

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/GC18-08097J" target="_blank" >GC18-08097J: Magnetické pole klidného Slunce a vynořující se magnetické oblasti - dynamika, energetika a odezva horní atmosféry</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

648

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

10

Strana od-do

A28

Kód UT WoS článku

000638125400004

EID výsledku v databázi Scopus

2-s2.0-85104031953