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Neutron star g-modes in the relativistic Cowling approximation

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arxiv 2409.20178 v1 pith:AOYBFI7K submitted 2024-09-30 gr-qc astro-ph.HE

classification gr-qcastro-ph.HE
keywords approximationcowlingdetectorsg-modeg-modesmatterneutronrelativistic
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abstract

Mature neutron stars are expected to exhibit gravity g-modes due to stratification caused by a varying matter composition in the high-density core. By employing the BSk equation of state family, and working within the relativistic Cowling approximation, we examine how subtle differences in the nuclear matter assumptions impact on the g-mode spectrum. We investigate the possibility of detecting individual g-mode resonances during a binary inspiral with current and next-generation ground-based detectors, like Cosmic Explorer and the Einstein Telescope. Our results suggest that these resonances may be within the reach of future detectors, especially for low mass stars with $M\lesssim1.4M_\odot$.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Reaction-constrained composition \(g\)-modes in neutron stars with antikaon condensates, hyperons, and \(\Delta(1232)\) resonances

    astro-ph.HE 2026-07 conditional novelty 7.0 of 10

    Antikaon condensates create a distinct composition g-mode that survives fast kaon equilibration, while strong Delta equilibration suppresses the Delta-driven mode except where a frozen Lambda gradient survives.

  2. Effective-one-body model for coalescing binary neutron stars: Incorporating tidal spin and enhanced radiation from dynamical tides

    gr-qc 2025-01 conditional novelty 7.0 of 10

    A new EOB model for BNS/NSBH inspirals adds tidal-spin back-reaction and finite-frequency radiation corrections, yielding waveform phase shifts up to a few radians that previous effective Love number models miss.

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