The Effect of Convection on Solar-type Pulsations

I shall provide an overview of our current understanding of modelling energy exchange between stellar convection and acoustic oscillations in stars supporting solar-type pulsations. Stellar calculations, adopting a 1D, non-local, time-dependent convection model, are calibrated against seismic observations and 3D-simulation results. These stellar models are tested against data from the Sun and from Kepler main-sequence stars. This provides insight into the physical processes that determine energy transport in the outer stellar layers leading to more accurate calculations of pulsation frequencies and their damping rates, as well as to more realistic predictions of oscillation amplitude ratios and phases.

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2024-10-28
DOI
https://doi.org/10.5281/zenodo.13999901
Primary Topic
Stellar, planetary, and galactic studies
Type
article
Field-Weighted Citation Impact
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article

The Effect of Convection on Solar-type Pulsations

Zenodo (CERN European Organization for Nuclear Research)
Stellar, planetary, and galactic studies
article

The Effect of Convection on Solar-type Pulsations

article en

Abstract

I shall provide an overview of our current understanding of modelling energy exchange between stellar convection and acoustic oscillations in stars supporting solar-type pulsations. Stellar calculations, adopting a 1D, non-local, time-dependent convection model, are calibrated against seismic observations and 3D-simulation results. These stellar models are tested against data from the Sun and from Kepler main-sequence stars. This provides insight into the physical processes that determine energy transport in the outer stellar layers leading to more accurate calculations of pulsation frequencies and their damping rates, as well as to more realistic predictions of oscillation amplitude ratios and phases.

Zenodo (CERN European Organization for Nuclear Research)
University of Vienna (AT)
Affordable and clean energy
Openalex Percentile: Top 74%
Stellar, planetary, and galactic studies
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