Improved near optimal angular quadratures for polarised radiative transfer in 3D MHD models
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00548082" target="_blank" >RIV/67985815:_____/21:00548082 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1051/0004-6361/202039424" target="_blank" >https://doi.org/10.1051/0004-6361/202039424</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202039424" target="_blank" >10.1051/0004-6361/202039424</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Improved near optimal angular quadratures for polarised radiative transfer in 3D MHD models
Popis výsledku v původním jazyce
Accurate angular quadratures are crucial for the numerical solution of three-dimensional (3D) radiative transfer problems, especially when the spectral line polarisation produced by the scattering of anisotropic radiation is included. There are two requirements for obtaining an optimal quadrature and they are difficult to satisfy simultaneously: high accuracy and short computing time. By imposing certain symmetries, we were recently able to derive a set of near optimal angular quadratures. Here, we extend our previous investigation by considering other symmetries. Moreover, we test the performance of our new quadratures by numerically solving a radiative transfer problem of resonance line polarisation in a 3D model of the solar atmosphere resulting from a magneto-hydrodynamical simulation. The new angular quadratures derived here outperform the previous ones in terms of the number of rays needed to achieve any given accuracy.
Název v anglickém jazyce
Improved near optimal angular quadratures for polarised radiative transfer in 3D MHD models
Popis výsledku anglicky
Accurate angular quadratures are crucial for the numerical solution of three-dimensional (3D) radiative transfer problems, especially when the spectral line polarisation produced by the scattering of anisotropic radiation is included. There are two requirements for obtaining an optimal quadrature and they are difficult to satisfy simultaneously: high accuracy and short computing time. By imposing certain symmetries, we were recently able to derive a set of near optimal angular quadratures. Here, we extend our previous investigation by considering other symmetries. Moreover, we test the performance of our new quadratures by numerically solving a radiative transfer problem of resonance line polarisation in a 3D model of the solar atmosphere resulting from a magneto-hydrodynamical simulation. The new angular quadratures derived here outperform the previous ones in terms of the number of rays needed to achieve any given accuracy.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10308 - Astronomy (including astrophysics,space science)
Návaznosti výsledku
Projekt
<a href="/cs/project/GA19-20632S" target="_blank" >GA19-20632S: Dopředné modelování a inverze polarizovaných slunečních spekter ve vícedimenzionálních geometriích</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Svazek periodika
645
Číslo periodika v rámci svazku
January
Stát vydavatele periodika
FR - Francouzská republika
Počet stran výsledku
6
Strana od-do
A101
Kód UT WoS článku
000613009200001
EID výsledku v databázi Scopus
2-s2.0-85099877966