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Modelling mountains on accreting magnetized neutron stars — arXiv:2608.17508

Source: arXiv (en)
Original: https://arxiv.org/abs/2608.17508
License (as archived): CC0-1.0
Archived: 2026-10-18T16:12:27.124Z
SHA-256 of the archived text: 6a470f1346e2e5cb8df6199c21e39a94cdf2e2a0ce483d35fdabaf20126cd89d
Stable URL of this page: https://metraipolis.com/documento/dc_f67ed90dedec

How to cite

Modelling mountains on accreting magnetized neutron stars — arXiv:2608.17508 — arXiv (en), https://arxiv.org/abs/2608.17508 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_f67ed90dedec (Metraipolis archive dc_f67ed90dedec, sha256 6a470f1346e2e5cb8df6199c21e39a94cdf2e2a0ce483d35fdabaf20126cd89d)

BibTeX

@misc{dcf67ed90dedec,
  title = {Modelling mountains on accreting magnetized neutron stars — arXiv:2608.17508},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2608.17508},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_f67ed90dedec; sha256 6a470f1346e2e5cb8df6199c21e39a94cdf2e2a0ce483d35fdabaf20126cd89d},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2608.17508. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Continuous gravitational waves from accreting neutron stars in Low Mass X-ray Binaries are one of the main targets for current and next generation ground based detectors. In order to select the most promising astrophysical sources, however, reliable predictions for the signals are required, and it is therefore necessary to develop models that consistently account for the combined effects of magnetic stresses, accretion-induced heating, and the elastic response of the crust.}{We present a model for computing the quadrupolar deformation, incorporating for the first time the coupled effects of a poloidal magnetic field, deep crustal heating, and crustal elasticity. Perturbations to the star's structure driven by the Lorentz force density and by thermally-induced density variations are computed by solving a system of linearised deformation equations in the crust, for which we consider the full elastic response, while the ocean and core treated as barotropic fluids. We identify a threshold accretion rate whose value depends on crustal microphysics and the superfluid gaps in the core, above which magnetic stresses and asymmetric accretion drive deformations of opposite sign, while below this threshold their roles are reversed. The predicted eccentricities reach magnitudes up to $\varepsilon\sim 10^{-11}$, corresponding to characteristic gravitational-wave strains accessible to next-generation detectors such as the Einstein Telescope or Cosmic Explorer, but generally below the sensitivity of current LIGO, Virgo and KAGRA interferometers. These results are consistent with the non-detection of continuous gravitational waves from accreting neutron stars in Low Mass X-ray Binaries in recent observational campaigns, but highlight the need of reliable models to understand the impact of gravitational wave emission in these systems and select relevant targets for future searches.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-08-19 in gr-qc).
Categorie arXiv: High Energy Astrophysical Phenomena (astro-ph.HE) ; General Relativity and Quantum Cosmology (gr-qc).
Pagina del lavoro: https://arxiv.org/abs/2608.17508 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-18T16:08:39.305Z dalla pagina https://arxiv.org/catchup/gr-qc/2026-08-19?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).