Efficient Computation of Collisional ℓ-mixing Rate Coefficients in Astrophysical Plasmas

Daniel Vrinceanu; R. Onofrio; J. B.R. Oonk; P. Salas; H. R. Sadeghpour

Efficient Computation of Collisional ℓ-mixing Rate Coefficients in Astrophysical Plasmas

Daniel Vrinceanu
, R. Onofrio
, J. B.R. Oonk
, P. Salas
, H. R. Sadeghpour

Thurgood Marshall School of Law

Università degli Studi di Padova
Sterrewacht Leiden
Institute for Theoretical Atomic, Molecular and Optical Physics

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

Abstract

<p> We present analytical expressions for direct evaluation of &ell;-mixing rate coefficients in proton-excited hydrogen atom collisions and describe a software package for efficient numerical evaluation of the collisional rate coefficients. Comparisons between rate coefficients calculated with various levels of approximation are discussed, highlighting their range of validity. These rate coefficients are benchmarked for radio recombination lines for hydrogen, evaluating the corresponding departure coefficients from local thermal equilibrium.</p>

Original language	American English
Journal	Default journal
State	Published - Jul 10 2019

Keywords

H II regions
ISM: abundances
ISM: atoms
methods: numerical
radio lines: ISM

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Efficient Computation of Collisional -mixing Rate Coefficients iFinal published version, 730 KBLicense: CC BY

https://doi.org/10.3847/1538-4357/ab218c

Cite this

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title = "Efficient Computation of Collisional ℓ-mixing Rate Coefficients in Astrophysical Plasmas",

abstract = " We present analytical expressions for direct evaluation of \&ell;-mixing rate coefficients in proton-excited hydrogen atom collisions and describe a software package for efficient numerical evaluation of the collisional rate coefficients. Comparisons between rate coefficients calculated with various levels of approximation are discussed, highlighting their range of validity. These rate coefficients are benchmarked for radio recombination lines for hydrogen, evaluating the corresponding departure coefficients from local thermal equilibrium.",

keywords = "H II regions, ISM: abundances, ISM: atoms, methods: numerical, radio lines: ISM",

author = "Daniel Vrinceanu and R. Onofrio and Oonk, \{J. B.R.\} and P. Salas and Sadeghpour, \{H. R.\}",

year = "2019",

month = jul,

day = "10",

language = "American English",

journal = "Default journal",

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TY - JOUR

T1 - Efficient Computation of Collisional ℓ-mixing Rate Coefficients in Astrophysical Plasmas

AU - Vrinceanu, Daniel

AU - Onofrio, R.

AU - Oonk, J. B.R.

AU - Salas, P.

AU - Sadeghpour, H. R.

PY - 2019/7/10

Y1 - 2019/7/10

N2 - We present analytical expressions for direct evaluation of &ell;-mixing rate coefficients in proton-excited hydrogen atom collisions and describe a software package for efficient numerical evaluation of the collisional rate coefficients. Comparisons between rate coefficients calculated with various levels of approximation are discussed, highlighting their range of validity. These rate coefficients are benchmarked for radio recombination lines for hydrogen, evaluating the corresponding departure coefficients from local thermal equilibrium.

AB - We present analytical expressions for direct evaluation of &ell;-mixing rate coefficients in proton-excited hydrogen atom collisions and describe a software package for efficient numerical evaluation of the collisional rate coefficients. Comparisons between rate coefficients calculated with various levels of approximation are discussed, highlighting their range of validity. These rate coefficients are benchmarked for radio recombination lines for hydrogen, evaluating the corresponding departure coefficients from local thermal equilibrium.

KW - H II regions

KW - ISM: abundances

KW - ISM: atoms

KW - methods: numerical

KW - radio lines: ISM

UR - https://digitalscholarship.tsu.edu/facpubs/106

M3 - Article

JO - Default journal

JF - Default journal

ER -

Efficient Computation of Collisional ℓ-mixing Rate Coefficients in Astrophysical Plasmas

Abstract

Keywords

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