Standard

H-Functions in Radiative Transfer Theory : Calculation of Voigt Functions and Justification of a Model for Formation of Cyclotron Lines in the Spectra of Neutron Stars. / Grigoryev, V. V.; Nagirner, D. I.; Grachev, S. I.

In: Astrophysics, Vol. 62, No. 1, 01.03.2019, p. 129-146.

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

Harvard

Grigoryev, VV, Nagirner, DI & Grachev, SI 2019, 'H-Functions in Radiative Transfer Theory: Calculation of Voigt Functions and Justification of a Model for Formation of Cyclotron Lines in the Spectra of Neutron Stars', Astrophysics, vol. 62, no. 1, pp. 129-146. https://doi.org/10.1007/s10511-019-09569-4

APA

Grigoryev, V. V., Nagirner, D. I., & Grachev, S. I. (2019). H-Functions in Radiative Transfer Theory: Calculation of Voigt Functions and Justification of a Model for Formation of Cyclotron Lines in the Spectra of Neutron Stars. Astrophysics, 62(1), 129-146. https://doi.org/10.1007/s10511-019-09569-4

Vancouver

Grigoryev VV, Nagirner DI, Grachev SI. H-Functions in Radiative Transfer Theory: Calculation of Voigt Functions and Justification of a Model for Formation of Cyclotron Lines in the Spectra of Neutron Stars. Astrophysics. 2019 Mar 1;62(1):129-146. https://doi.org/10.1007/s10511-019-09569-4

Author

Grigoryev, V. V. ; Nagirner, D. I. ; Grachev, S. I. / H-Functions in Radiative Transfer Theory : Calculation of Voigt Functions and Justification of a Model for Formation of Cyclotron Lines in the Spectra of Neutron Stars. In: Astrophysics. 2019 ; Vol. 62, No. 1. pp. 129-146.

BibTeX

@article{d6bbf5206344420d901a770572e93e07,
title = "H-Functions in Radiative Transfer Theory: Calculation of Voigt Functions and Justification of a Model for Formation of Cyclotron Lines in the Spectra of Neutron Stars",
abstract = "After a brief discussion of the history of the introduction of H-functions into radiative transfer theory, the equations for these functions are introduced and explicit expressions given for them. Formulas are also given for calculating the direction and frequency distributions of radiation emerging from a semi-infinite medium with different external and internal sources. An algorithm for calculating Voigt H-functions and related quantities is described in detail. A modern free code has been developed in Fortran language for implementing this algorithm. This code can be used to calculate the profiles of spectral lines with a Voigt absorption line profile with high accuracy. Examples of line profile calculations are shown and a qualitative justification of a hypothesis for the formation of cyclotron features in the spectra of neutron stars is given.",
keywords = "cyclotron feature, radiative transfer theory, spectral lines, Voigt line profile",
author = "Grigoryev, {V. V.} and Nagirner, {D. I.} and Grachev, {S. I.}",
note = "Publisher Copyright: {\textcopyright} 2019, Springer Science+Business Media, LLC, part of Springer Nature. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",
year = "2019",
month = mar,
day = "1",
doi = "10.1007/s10511-019-09569-4",
language = "English",
volume = "62",
pages = "129--146",
journal = "Astrophysics",
issn = "0571-7256",
publisher = "Wolters Kluwer",
number = "1",

}

RIS

TY - JOUR

T1 - H-Functions in Radiative Transfer Theory

T2 - Calculation of Voigt Functions and Justification of a Model for Formation of Cyclotron Lines in the Spectra of Neutron Stars

AU - Grigoryev, V. V.

AU - Nagirner, D. I.

AU - Grachev, S. I.

N1 - Publisher Copyright: © 2019, Springer Science+Business Media, LLC, part of Springer Nature. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2019/3/1

Y1 - 2019/3/1

N2 - After a brief discussion of the history of the introduction of H-functions into radiative transfer theory, the equations for these functions are introduced and explicit expressions given for them. Formulas are also given for calculating the direction and frequency distributions of radiation emerging from a semi-infinite medium with different external and internal sources. An algorithm for calculating Voigt H-functions and related quantities is described in detail. A modern free code has been developed in Fortran language for implementing this algorithm. This code can be used to calculate the profiles of spectral lines with a Voigt absorption line profile with high accuracy. Examples of line profile calculations are shown and a qualitative justification of a hypothesis for the formation of cyclotron features in the spectra of neutron stars is given.

AB - After a brief discussion of the history of the introduction of H-functions into radiative transfer theory, the equations for these functions are introduced and explicit expressions given for them. Formulas are also given for calculating the direction and frequency distributions of radiation emerging from a semi-infinite medium with different external and internal sources. An algorithm for calculating Voigt H-functions and related quantities is described in detail. A modern free code has been developed in Fortran language for implementing this algorithm. This code can be used to calculate the profiles of spectral lines with a Voigt absorption line profile with high accuracy. Examples of line profile calculations are shown and a qualitative justification of a hypothesis for the formation of cyclotron features in the spectra of neutron stars is given.

KW - cyclotron feature

KW - radiative transfer theory

KW - spectral lines

KW - Voigt line profile

UR - http://www.scopus.com/inward/record.url?scp=85062598598&partnerID=8YFLogxK

U2 - 10.1007/s10511-019-09569-4

DO - 10.1007/s10511-019-09569-4

M3 - Article

AN - SCOPUS:85062614831

VL - 62

SP - 129

EP - 146

JO - Astrophysics

JF - Astrophysics

SN - 0571-7256

IS - 1

ER -

ID: 71756911