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Non-stationary Processes in the Atmospheres of Early-type Stars: Influence on the Forbidden-to-Intercombination Line Intensity Ratio. / Dushin, V. V.; Kholtygin, A. F.

In: Astronomy Reports, Vol. 59, No. 7, 2015.

Research output: Contribution to journal › Article › peer-review

Harvard

Dushin, VV & Kholtygin, AF 2015, 'Non-stationary Processes in the Atmospheres of Early-type Stars: Influence on the Forbidden-to-Intercombination Line Intensity Ratio', Astronomy Reports, vol. 59, no. 7. https://doi.org/10.1134/S1063772915070033

APA

Dushin, V. V., & Kholtygin, A. F. (2015). Non-stationary Processes in the Atmospheres of Early-type Stars: Influence on the Forbidden-to-Intercombination Line Intensity Ratio. Astronomy Reports, 59(7). https://doi.org/10.1134/S1063772915070033

Vancouver

Dushin VV, Kholtygin AF. Non-stationary Processes in the Atmospheres of Early-type Stars: Influence on the Forbidden-to-Intercombination Line Intensity Ratio. Astronomy Reports. 2015;59(7). https://doi.org/10.1134/S1063772915070033

Author

Dushin, V. V. ; Kholtygin, A. F. / Non-stationary Processes in the Atmospheres of Early-type Stars: Influence on the Forbidden-to-Intercombination Line Intensity Ratio. In: Astronomy Reports. 2015 ; Vol. 59, No. 7.

BibTeX

@article{c146ba32eed34ae2a53bd4d69056e592,
title = "Non-stationary Processes in the Atmospheres of Early-type Stars: Influence on the Forbidden-to-Intercombination Line Intensity Ratio",
abstract = "The results of kinetic equilibrium modeling for highly ionized atoms in the expanding atmospheres of early-type stars are presented. The influence of these processes on the forbidden-tointercombination line intensity ratio R = f/i for He-like ions (CV, NVI, OVII, etc.) in X-ray spectra is considered. If non-stationarity of the levels is taken into account, the instantaneous value of R m can vary on short time scales (fraction of a second) by nearly three orders of magnitude, compared to the stationary value in an equilibrium plasma. At the same time, the value of this ratio averaged over long time scales (hours and minutes), R a, can vary by 20%, leading to overestimation of the electron number density by up to one to two orders of magnitude.",
keywords = "звезды, ренгтеновское излучение, спектры",
author = "Dushin, {V. V.} and Kholtygin, {A. F.}",
year = "2015",
doi = "10.1134/S1063772915070033",
language = "English",
volume = "59",
journal = "Astronomy Reports",
issn = "1063-7729",
publisher = "МАИК {"}Наука/Интерпериодика{"}",
number = "7",

}

RIS

TY - JOUR

T1 - Non-stationary Processes in the Atmospheres of Early-type Stars: Influence on the Forbidden-to-Intercombination Line Intensity Ratio

AU - Dushin, V. V.

AU - Kholtygin, A. F.

PY - 2015

Y1 - 2015

N2 - The results of kinetic equilibrium modeling for highly ionized atoms in the expanding atmospheres of early-type stars are presented. The influence of these processes on the forbidden-tointercombination line intensity ratio R = f/i for He-like ions (CV, NVI, OVII, etc.) in X-ray spectra is considered. If non-stationarity of the levels is taken into account, the instantaneous value of R m can vary on short time scales (fraction of a second) by nearly three orders of magnitude, compared to the stationary value in an equilibrium plasma. At the same time, the value of this ratio averaged over long time scales (hours and minutes), R a, can vary by 20%, leading to overestimation of the electron number density by up to one to two orders of magnitude.

AB - The results of kinetic equilibrium modeling for highly ionized atoms in the expanding atmospheres of early-type stars are presented. The influence of these processes on the forbidden-tointercombination line intensity ratio R = f/i for He-like ions (CV, NVI, OVII, etc.) in X-ray spectra is considered. If non-stationarity of the levels is taken into account, the instantaneous value of R m can vary on short time scales (fraction of a second) by nearly three orders of magnitude, compared to the stationary value in an equilibrium plasma. At the same time, the value of this ratio averaged over long time scales (hours and minutes), R a, can vary by 20%, leading to overestimation of the electron number density by up to one to two orders of magnitude.

KW - звезды

KW - ренгтеновское излучение

KW - спектры

U2 - 10.1134/S1063772915070033

DO - 10.1134/S1063772915070033

M3 - Article

VL - 59

JO - Astronomy Reports

JF - Astronomy Reports

SN - 1063-7729

IS - 7

ER -

ID: 3939560