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PORTA: POlarized 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%3A00559390" target="_blank" >RIV/67985815:_____/20:00559390 - isvavai.cz</a>

  • Result on the web

    <a href="https://gitlab.com/polmag/PORTA" target="_blank" >https://gitlab.com/polmag/PORTA</a>

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    PORTA: POlarized Radiative TrAnsfer

  • Original language description

    PORTA solves three-dimensional non-equilibrium radiative transfer problems with massively parallel computers. The code can be usednfor modeling the spectral line polarization produced by the scattering of anisotropic radiation and the Hanle and Zeeman effects assuming complete frequency redistribution, either using two-level or multilevel atomic models. The numerical method of solution used to find the self-consistent values of the atomic density matrix at each point of the model’s Cartesian grid is based on Jacobi iterative scheme and on a short-characteristics formal solver of the Stokes-vector transfer equation that uses monotonic Bézier interpolation. The code can also be used to compute the linear polarization of the continuum radiation caused by Rayleigh and Thomson scattering in 3D models of stellar atmospheres, and to solve the simpler 3D radiative transfer problem of unpolarized radiation in multilevel systems. PORTA accepts/produces HDF5 input/output and offers an advanced graphical user interface.

  • Czech name

  • Czech description

Classification

  • Type

    R - Software

  • CEP classification

  • OECD FORD branch

    10308 - Astronomy (including astrophysics,space science)

Result continuities

  • Project

    <a href="/en/project/GPP209%2F12%2FP741" target="_blank" >GPP209/12/P741: Spectropolarimetric modeling and diagnostics of magnetic fields in the upper atmosphere of the quiet Sun</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

  • Internal product ID

    PORTA

  • Technical parameters

    Program v jazyce C pro výpočty 3D NLTE přenosu záření v plasmatu hvězných atmosfér se započtením polarizace záření vhodný pro masivně paralelní výpočty. Součástí je i grafické uživatelské rozhraní (Python) pro vizualizaci výsledků.

  • Economical parameters

    vyvinutý software pro základní výzkum

  • Owner IČO

    67985815

  • Owner name

    Astronomický ústav AV ČR, v. v. i.