Progress towards a 3D Monte Carlo radiative transfer code for outflow wind modelling

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00570190" target="_blank" >RIV/67985815:_____/23:00570190 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/23:00130590

Result on the web

<a href="https://hdl.handle.net/11104/0341978" target="_blank" >https://hdl.handle.net/11104/0341978</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202243997" target="_blank" >10.1051/0004-6361/202243997</a>

Result language

angličtina

Original language name

Progress towards a 3D Monte Carlo radiative transfer code for outflow wind modelling

Original language description

We present a 3 D Monte Carlo code for radiative transfer modelling, which is aimed to calculate the plasma ionisation and excitation state with the statistical equilibrium equations, moreover, to implement photon-matter coupling. As a first step, we present our Monte Carlo radiation transfer routines developed and tested from scratch.Methods. The background model atmosphere (the temperature, density, and velocity structure) can use an arbitrary grid referred to as the modGrid. The radiative transfer was solved using the Monte Carlo method in a Cartesian grid, referred to as the propGrid. This Cartesian grid was created based on the structure of the modGrid, correspondence between these two grids was set at the beginning of the calculations and then kept fixed. The propGrid can be either regular or adaptive, two modes of adaptive grids were tested. The accuracy and calculation speed for different propGrids was analysed. Photon interaction with matter was handled using the Lucy's macroatom approach. Test calculations using our code were compared with the results obtained by a different Monte Carlo radiative transfer code. Our method and the related code for the 3 D radiative transfer using the Monte Carlo and macroatom methods offer an accurate and reliable solution for the radiative transfer problem, and are especially promising for the inclusion and treatment of 3 D inhomogeneities.

Czech name

—

Czech description

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Type

J_imp - 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)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Volume of the periodical

670

Issue of the periodical within the volume

February

Country of publishing house

FR - FRANCE

Number of pages

22

Pages from-to

A41

UT code for WoS article

000926204200005

EID of the result in the Scopus database

2-s2.0-85147709753