{
  "id": "2203.00623",
  "version": "v1",
  "published": "2022-03-01T17:08:11.000Z",
  "updated": "2022-03-01T17:08:11.000Z",
  "title": "Prospects for distinguishing dynamical tides in inspiralling binary neutron stars with third generation gravitational-wave detectors",
  "authors": [
    "Natalie Williams",
    "Geraint Pratten",
    "Patricia Schmidt"
  ],
  "comment": "16 pages, 10 figures",
  "categories": [
    "astro-ph.HE",
    "gr-qc"
  ],
  "abstract": "Tidal effects in gravitational-wave (GW) observations from binary neutron star mergers have the potential to probe ultra-dense matter and shed light on the unknown nuclear equation of state of neutron stars. Tidal effects in inspiralling neutron star binaries become relevant at GW frequencies of a few hundred Hz and require detectors with exquisite high-frequency sensitivity. Third generation GW detectors such as the Einstein Telescope or Cosmic Explorer will be particularly sensitive in this high-frequency regime, allowing us to probe neutron star tides beyond the adiabatic approximation. Here we assess whether dynamical tides can be measured from a neutron star inspiral. We find that the measurability of dynamical tides depends strongly on the neutron star mass and equation of state. For a semi-realistic population of 10,000 inspiralling binary neutron stars, we conservatively estimate that on average $\\mathcal{O}(50)$ binaries will have measurable dynamical tides. As dynamical tides are characterised not only by the star's tidal deformability but also by its fundamental ($f$-) mode frequency, they present a possibility of probing higher-order tidal effects and test consistency with quasi-universal relations. For a GW170817-like signal in a third generation detector network, we find that the stars' $f$-mode frequencies can be measured to within a few hundred Hz.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-03-01T17:08:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "inspiralling binary neutron stars",
      "third generation gravitational-wave detectors",
      "distinguishing dynamical tides",
      "tidal effects"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}