The Hanle and Zeeman Polarization Signals of the Solar Ca II 8542 angstromLine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00463132" target="_blank" >RIV/67985815:_____/16:00463132 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3847/2041-8205/826/1/L10" target="_blank" >http://dx.doi.org/10.3847/2041-8205/826/1/L10</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/2041-8205/826/1/L10" target="_blank" >10.3847/2041-8205/826/1/L10</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Hanle and Zeeman Polarization Signals of the Solar Ca II 8542 angstromLine

Popis výsledku v původním jazyce

We highlight the main results of a three-dimensional (3D) multilevel radiative transfer investigation about the solar disk-center polarization of the Ca-II 8542 angstrom line. First, through the use of a 3D model of the solar atmosphere, we investigate the linear polarization that occurs due to the atomic level polarization produced by the absorption and scattering of anisotropic radiation, taking into account the symmetry-breaking effects caused by its thermal, dynamic, and magnetic structure. Second, we study the contribution of the Zeeman effect to the linear and circular polarization. Finally, we show examples of the Stokes profiles produced by the joint action of the atomic level polarization and the Hanle and Zeeman effects. We find that the Zeeman effect tends to dominate the linear polarization signals only in the localized patches of opposite magnetic polarity, where the magnetic field is relatively strong and slightly inclined; outside such very localized patches, the linear polarization is often dominated by the contribution of atomic level polarization.

Název v anglickém jazyce

The Hanle and Zeeman Polarization Signals of the Solar Ca II 8542 angstromLine

Popis výsledku anglicky

We highlight the main results of a three-dimensional (3D) multilevel radiative transfer investigation about the solar disk-center polarization of the Ca-II 8542 angstrom line. First, through the use of a 3D model of the solar atmosphere, we investigate the linear polarization that occurs due to the atomic level polarization produced by the absorption and scattering of anisotropic radiation, taking into account the symmetry-breaking effects caused by its thermal, dynamic, and magnetic structure. Second, we study the contribution of the Zeeman effect to the linear and circular polarization. Finally, we show examples of the Stokes profiles produced by the joint action of the atomic level polarization and the Hanle and Zeeman effects. We find that the Zeeman effect tends to dominate the linear polarization signals only in the localized patches of opposite magnetic polarity, where the magnetic field is relatively strong and slightly inclined; outside such very localized patches, the linear polarization is often dominated by the contribution of atomic level polarization.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

—

Projekt

<a href="/cs/project/GA16-16861S" target="_blank" >GA16-16861S: Vícerozměrné modelování polarizovaných spekter vnější sluneční atmosféry</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Astrophysical Journal Letters

ISSN

2041-8205

e-ISSN

—

Svazek periodika

826

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

"L10/1"-"L10/6"

Kód UT WoS článku

000380739300010

EID výsledku v databázi Scopus

2-s2.0-84979255183