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August 11, 2025Astronomy and Astrophysics

Revisiting the hypothesis of purely stochastic excitation of global p modes in the Sun

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Authors

EPE. PanetierRGR.A. GarcíaSBSylvain Breton

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Overview

Analysis indicates energy excess in p modes during solar cycles, suggesting additional excitation sources beyond convection.

Key Points

  • Energy excess in p modes deviates from purely stochastic excitation, indicating other sources are involved.
  • Over 27 years of helioseismic data analysis revealed no consistent patterns for high-energy excess associated with flares or CMEs.
  • Reconstructed time series data correlate variations in mode energy with solar cycle activity and suggest modulation by quasi-biennial oscillation.
  • Excitation rates appear higher for modes in the upper convective zone and are not attributed solely to instrumental effects.

Cite This Study

Panetier et al. (2025) studied this question.

synapsesocial.com/papers/68a35ee30a429f7973327beahttps://doi.org/10.1051/0004-6361/202555189
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