Linear Analysis
We discuss the general strategy of the theoretical description of stellar stability and pulsations. The initial construction of a spherically symmetric stellar model in hydrostatic equilibrium is followed by considering small perturbations around the equilibrium. Both for radial and nonradial distur...
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| Formato: | Objeto de conferencia |
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2019
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/167719 |
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I19-R120-10915-1677192024-07-03T20:01:59Z http://sedici.unlp.edu.ar/handle/10915/167719 Linear Analysis Glatzel, Wolfgang 2019-11 2021 2024-07-03T13:50:41Z en Ciencias Astronómicas asteroseismology hydrodynamics radiative transfer stars: oscillations We discuss the general strategy of the theoretical description of stellar stability and pulsations. The initial construction of a spherically symmetric stellar model in hydrostatic equilibrium is followed by considering small perturbations around the equilibrium. Both for radial and nonradial disturbances the linear equations governing these small perturbations are derived. The influence of the thermal and the dynamical timescale on the properties of linear pulsations is discussed in detail. For unstable stellar models the last step of the general approach consists of following the evolution of an instability into the nonlinear regime by numerical simulation. 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 73-86 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas asteroseismology hydrodynamics radiative transfer stars: oscillations |
| spellingShingle |
Ciencias Astronómicas asteroseismology hydrodynamics radiative transfer stars: oscillations Glatzel, Wolfgang Linear Analysis |
| topic_facet |
Ciencias Astronómicas asteroseismology hydrodynamics radiative transfer stars: oscillations |
| description |
We discuss the general strategy of the theoretical description of stellar stability and pulsations. The initial construction of a spherically symmetric stellar model in hydrostatic equilibrium is followed by considering small perturbations around the equilibrium. Both for radial and nonradial disturbances the linear equations governing these small perturbations are derived. The influence of the thermal and the dynamical timescale on the properties of linear pulsations is discussed in detail. For unstable stellar models the last step of the general approach consists of following the evolution of an instability into the nonlinear regime by numerical simulation. |
| format |
Objeto de conferencia Objeto de conferencia |
| author |
Glatzel, Wolfgang |
| author_facet |
Glatzel, Wolfgang |
| author_sort |
Glatzel, Wolfgang |
| title |
Linear Analysis |
| title_short |
Linear Analysis |
| title_full |
Linear Analysis |
| title_fullStr |
Linear Analysis |
| title_full_unstemmed |
Linear Analysis |
| title_sort |
linear analysis |
| publishDate |
2019 |
| url |
http://sedici.unlp.edu.ar/handle/10915/167719 |
| work_keys_str_mv |
AT glatzelwolfgang linearanalysis |
| _version_ |
1807223553264713728 |