{
  "id": "1608.07049",
  "version": "v1",
  "published": "2016-08-25T08:24:39.000Z",
  "updated": "2016-08-25T08:24:39.000Z",
  "title": "Observational implications of a strong phase transition in the dense matter equation of state for the rotational evolution of neutron stars",
  "authors": [
    "M. Bejger",
    "D. Blaschke",
    "P. Haensel",
    "J. L. Zdunik",
    "M. Fortin"
  ],
  "comment": "8 pages, 6 figures, submitted to Astronomy and Astrophysics",
  "categories": [
    "astro-ph.HE",
    "astro-ph.SR"
  ],
  "abstract": "We explore the implications of a strong first-order phase transition region in the dense matter equation of state in the interiors of rotating neutron stars, and the resulting creation of two disjoint families of neutron-stars' configurations (the so-called high-mass twins). Rotating, axisymmetric and stationary stellar configurations are obtained numerically in the framework of general relativity, and their global parameters and stability are studied. The equation of state-induced instability divides stable neutron star configurations into two disjoint families: neutron stars (second family) and hybrid stars (third family), with an overlapping region in mass, the high-mass twin star region. These two regions are divided by an instability strip. Its existence has interesting astrophysical consequences for rotating neutron stars. We note that it provides a \"natural\" explanation for the rotational frequency cutoff in the observed distribution of neutron stars spins, and for the apparent lack of back-bending in pulsar timing. It also straightforwardly enables a substantial energy release in a mini-collapse to another neutron-star configuration (core quake), or to a black hole.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-08-25T08:24:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dense matter equation",
      "strong phase transition",
      "observational implications",
      "rotational evolution",
      "first-order phase transition region"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}