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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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

  • 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