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February 2, 2026

The impact of differential rotation on the stochastic excitation of acoustic modes in solar-like pulsators

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Authors

GBG. BiscarratLBL. BessilaSMS. Mathis

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Overview

Examines how differential rotation affects acoustic mode excitation in solar-like stars, implying important insights for asteroseismic observations.

Key Points

  • The study aims to investigate the influence of differential rotation on the stochastic excitation of acoustic modes in solar-like stars.
  • Developed theoretical predictions using rotating mixing length theory.
  • Estimated impact on power injection in oscillation modes numerically.
  • Utilized MESA stellar structure and evolution code alongside GYRE stellar pulsation code.
  • Analyzed the effects of azimuthal order on acoustic mode amplitudes.
  • Power injected in acoustic modes varies by up to 30% for stars with the same mean rotation rate but different differential rotation rates.
  • Excitation of axisymmetric acoustic modes is inhibited in anti-solar differential rotation configurations.
  • Solar differential rotation regimes allow more efficient acoustic mode excitation compared to uniform rotation.
  • Amplitudes of sectoral modes differ inversely compared to axisymmetric modes, showing variation based on azimuthal order.

Cite This Study

Biscarrat et al. (2026) studied this question.

synapsesocial.com/papers/6980fff5c1c9540dea812d6ehttps://doi.org/10.1051/0004-6361/202554366/pdf
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