Near optimal angular quadratures for polarised radiative transfer
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00534662" target="_blank" >RIV/67985815:_____/20:00534662 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202037566" target="_blank" >https://doi.org/10.1051/0004-6361/202037566</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202037566" target="_blank" >10.1051/0004-6361/202037566</a>
Alternative languages
Result language
angličtina
Original language name
Near optimal angular quadratures for polarised radiative transfer
Original language description
In three-dimensional (3D) radiative transfer (RT) problems, the tensor product quadratures are generally not optimal in terms of the number of discrete ray directions needed for a given accuracy of the angular integration of the radiation field. In this paper, we derive a new set of angular quadrature rules that are more suitable for solving 3D RT problems with the short- and long-characteristics formal solvers. These quadratures are more suitable than the currently used ones for the numerical calculation of the radiation field tensors that are relevant in the problem of the generation and transfer of polarised radiation without assuming local thermodynamical equilibrium (non-LTE). We show that our new quadratures can save up to about 30% of computing time with respect to the Gaussian-trapezoidal product quadratures with the same accuracy.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA19-20632S" target="_blank" >GA19-20632S: Forward modeling and inversion of polarized solar spectra in multi-dimensional geometries</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
1432-0746
e-ISSN
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Volume of the periodical
636
Issue of the periodical within the volume
April
Country of publishing house
FR - FRANCE
Number of pages
5
Pages from-to
A24
UT code for WoS article
000526994900008
EID of the result in the Scopus database
2-s2.0-85083301129