{
  "id": "2006.03676",
  "version": "v1",
  "published": "2020-06-05T20:47:02.000Z",
  "updated": "2020-06-05T20:47:02.000Z",
  "title": "Studying the parameters of the extended $σ$-$ω$ model for neutron star matter",
  "authors": [
    "David Alvarez-Castillo",
    "Alexander Ayriyan",
    "Gergely Gábor Barnaföldi",
    "Hovik Grigorian",
    "Péter Pósfay"
  ],
  "comment": "14 pages, 15 figures, 2 tables",
  "categories": [
    "astro-ph.HE",
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "In this work we study the parameters of the extended $\\sigma$-$\\omega$ model for neutron star matter by a Bayesian analysis on state-of-the-art multi-messenger astronomy observations, namely mass, radius and tidal deformabilities. We have considered three parameters of the model, the Landau mass $m_L$, the nuclear compressibility $K_0$, and the value of the symmetry energy $S_0$, all at saturation density $n_0$. As a result, we are able to estimate the best values of the Landau mass of $m_L \\approx 0.73$ GeV, whereas the values of $K_0$ and $S_0$ fall within already known empirical values. Furthermore, for neutron stars we find the most probable value of 13 km $<R_{1.4}<$ 13.5 km and the upper mass limit of $M_{max} \\approx 2.2$ M$_{\\odot}$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-06-05T20:47:02.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "neutron star matter",
      "parameters",
      "state-of-the-art multi-messenger astronomy observations",
      "landau mass",
      "upper mass limit"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}