The effect of horizontal plasma inhomogeneities in 3D NLTE
radiation transfer in stellar atmospheres

J 2019

The effect of horizontal plasma inhomogeneities in 3D NLTE radiation transfer in stellar atmospheres

TICHÝ, Adam a Jiří KUBÁT

Základní údaje

Originální název

The effect of horizontal plasma inhomogeneities in 3D NLTE radiation transfer in stellar atmospheres

Autoři

TICHÝ, Adam a Jiří KUBÁT

Vydání

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, Oxford, PERGAMON-ELSEVIER SCIENCE LTD, 2019, 0022-4073

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Full Text

Impakt faktor

Impact factor: 3.047

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/19:00107435

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Radiative transfer; Line: formation; Stars: atmospheres; Astrophysics - Solar and Stellar Astrophysics

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 18. 3. 2020 14:29, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We aim to demonstrate the effect of atmospheric inhomogeneities on the emergent specific intensity and radiation flux of a spectral line radiation. We self-consistently solve the NLTE problem for a two-level atom in a 3D atmosphere using the Cartesian grid. For that purpose, we use the 3D radiative transfer code PORTA. By examining simple examples, we study cases where the temperature inhomogeneities in the atmosphere models lead to the modification of the emergent radiation. We show that specific temperature inhomogeneities in the model atmospheres influence the emerging radiation, and that interpretation of the stellar spectra based on a plane-parallel atmosphere models can lead to erroneous conclusions about the atmospheric structure.

Návaznosti

GA16-01116S, projekt VaV

Název: Atmosféry a okolohvězdné prostředí magnetických horkých hvězd

Investor: Grantová agentura ČR, Atmosféry a okolohvězdné prostředí magnetických horkých hvězd

Citovat

TICHÝ, Adam a Jiří KUBÁT. The effect of horizontal plasma inhomogeneities in 3D NLTE radiation transfer in stellar atmospheres. JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER. Oxford: PERGAMON-ELSEVIER SCIENCE LTD, 2019, roč. 225, MAR, s. 249-257. ISSN 0022-4073. Dostupné z: https://doi.org/10.1016/j.jqsrt.2018.12.024.

@article{1535736,
   author = {Tichý, Adam and Kubát, Jiří},
   article_location = {Oxford},
   article_number = {MAR},
   doi = {https://doi.org/10.1016/j.jqsrt.2018.12.024},
   keywords = {Radiative transfer; Line: formation; Stars: atmospheres; Astrophysics - Solar and Stellar Astrophysics},
   language = {eng},
   issn = {0022-4073},
   journal = {JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER},
   title = {The effect of horizontal plasma inhomogeneities in 3D NLTE radiation transfer in stellar atmospheres},
   url = {https://www.sciencedirect.com/science/article/pii/S0022407318304151},
   volume = {225},
   year = {2019}
}

TY  - JOUR
ID  - 1535736
AU  - Tichý, Adam - Kubát, Jiří
PY  - 2019
TI  - The effect of horizontal plasma inhomogeneities in 3D NLTE radiation transfer in stellar atmospheres
JF  - JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
VL  - 225
IS  - MAR
SP  - 249-257
EP  - 249-257
PB  - PERGAMON-ELSEVIER SCIENCE LTD
SN  - 00224073
KW  - Radiative transfer
KW  - Line: formation
KW  - Stars: atmospheres
KW  - Astrophysics - Solar and Stellar Astrophysics
UR  - https://www.sciencedirect.com/science/article/pii/S0022407318304151
L2  - https://www.sciencedirect.com/science/article/pii/S0022407318304151
N2  - We aim to demonstrate the effect of atmospheric inhomogeneities on the emergent specific intensity and radiation flux of a spectral line radiation. We self-consistently solve the NLTE problem for a two-level atom in a 3D atmosphere using the Cartesian grid. For that purpose, we use the 3D radiative transfer code PORTA. By examining simple examples, we study cases where the temperature inhomogeneities in the atmosphere models lead to the modification of the emergent radiation. We show that specific temperature inhomogeneities in the model atmospheres influence the emerging radiation, and that interpretation of the stellar spectra based on a plane-parallel atmosphere models can lead to erroneous conclusions about the atmospheric structure.
ER  -

TICHÝ, Adam a Jiří KUBÁT. The effect of horizontal plasma inhomogeneities in 3D NLTE radiation transfer in stellar atmospheres. \textit{JOURNAL OF QUANTITATIVE SPECTROSCOPY \&{} RADIATIVE TRANSFER}. Oxford: PERGAMON-ELSEVIER SCIENCE LTD, 2019, roč.~225, MAR, s.~249-257. ISSN~0022-4073. Dostupné z: https://doi.org/10.1016/j.jqsrt.2018.12.024.

Přehled o publikaci