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We study the influence of equilibrium and adiabatic sound speeds on neutron star (NS) mass-radius relations, stability and f-mode oscillations using SINPA (hadronic) and Gibbs (hybrid) equation of state (EOS) models. We find that consideration of the adiabatic sound speed significantly affects these properties. These findings emphasize the importance of sound speed effects on NS stability and provide valuable constraints on the composition and structure of NSs.

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Neutron Star Radial Stability: Insights from Sound Speed

  • 会议论文

  • 发表日期：

    2025年

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  • Sayantan Ghosh,
  • Sailesh Ranjan Mohanty,
  • Tianqi Zhao,
  • Bharat Kumar

摘要

We study the influence of equilibrium and adiabatic sound speeds on neutron star (NS) mass-radius relations, stability and f-mode oscillations using SINPA (hadronic) and Gibbs (hybrid) equation of state (EOS) models. We find that consideration of the adiabatic sound speed significantly affects these properties. These findings emphasize the importance of sound speed effects on NS stability and provide valuable constraints on the composition and structure of NSs.