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arXiv · 2409.20178

Neutron star g-modes in the relativistic Cowling approximation

Rhys Counsell·Fabian Gittins·Nils Andersson·Pantelis Pnigouras
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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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Rhys Counsell, Fabian Gittins, Nils Andersson, Pantelis Pnigouras. 2024-09-30. Neutron star g-modes in the relativistic Cowling approximation. https://doi.org/10.1093/mnras%2Fstae2721

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