Low Amplitude Adiabatic Non-radial Stellar Oscillations

We present the problem of low amplitude, adiabatic non-radial oscillations starting from first principles. We describe the perturbations imposed to the models, assuming that its non-perturbed structure is spherical. Then, we restrict ourselves to the case of adiabatic oscillations, presenting the eq...

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Autor principal: Benvenuto, Omar Gustavo
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2019
Materias:
Ciencias Astronómicas
asteroseismology
stars: oscillations
stars: interiors
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/167720
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-167720
record_format dspace
spelling I19-R120-10915-1677202024-07-03T20:01:55Z http://sedici.unlp.edu.ar/handle/10915/167720 Low Amplitude Adiabatic Non-radial Stellar Oscillations Benvenuto, Omar Gustavo 2019-11 2021 2024-07-03T14:01:44Z en Ciencias Astronómicas asteroseismology stars: oscillations stars: interiors We present the problem of low amplitude, adiabatic non-radial oscillations starting from first principles. We describe the perturbations imposed to the models, assuming that its non-perturbed structure is spherical. Then, we restrict ourselves to the case of adiabatic oscillations, presenting the equations written in terms of the Dziem- bowski variables. We describe a numerical method for solving these equations based on finite differences and apply it for the simple case of polytropic spheres. A computer code based on this algorithm is available at the web page of the school. This method can be easily generalised for computing the case of low amplitude, non-adiabatic, non-radial pulsations. Facultad de Ciencias Astronómicas y Geofísicas Objeto de conferencia Objeto de conferencia http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 45-63
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
asteroseismology
stars: oscillations
stars: interiors
spellingShingle Ciencias Astronómicas
asteroseismology
stars: oscillations
stars: interiors
Benvenuto, Omar Gustavo
Low Amplitude Adiabatic Non-radial Stellar Oscillations
topic_facet Ciencias Astronómicas
asteroseismology
stars: oscillations
stars: interiors
description We present the problem of low amplitude, adiabatic non-radial oscillations starting from first principles. We describe the perturbations imposed to the models, assuming that its non-perturbed structure is spherical. Then, we restrict ourselves to the case of adiabatic oscillations, presenting the equations written in terms of the Dziem- bowski variables. We describe a numerical method for solving these equations based on finite differences and apply it for the simple case of polytropic spheres. A computer code based on this algorithm is available at the web page of the school. This method can be easily generalised for computing the case of low amplitude, non-adiabatic, non-radial pulsations.
format Objeto de conferencia
Objeto de conferencia
author Benvenuto, Omar Gustavo
author_facet Benvenuto, Omar Gustavo
author_sort Benvenuto, Omar Gustavo
title Low Amplitude Adiabatic Non-radial Stellar Oscillations
title_short Low Amplitude Adiabatic Non-radial Stellar Oscillations
title_full Low Amplitude Adiabatic Non-radial Stellar Oscillations
title_fullStr Low Amplitude Adiabatic Non-radial Stellar Oscillations
title_full_unstemmed Low Amplitude Adiabatic Non-radial Stellar Oscillations
title_sort low amplitude adiabatic non-radial stellar oscillations
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/167720
work_keys_str_mv AT benvenutoomargustavo lowamplitudeadiabaticnonradialstellaroscillations
_version_ 1807223553537343488

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