{
  "id": "2012.15785",
  "version": "v1",
  "published": "2020-12-31T18:07:21.000Z",
  "updated": "2020-12-31T18:07:21.000Z",
  "title": "Studying the onset of deconfinement with multi-messenger astronomy of neutron stars",
  "authors": [
    "David Blaschke",
    "Mateusz Cierniak"
  ],
  "comment": "6 pages, 5 figures, 1 table",
  "categories": [
    "astro-ph.HE",
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "With the first multi-messenger observation of a binary neutron star merger (GW170817) new constraints became available for masses and radii of neutron stars. We introduce a class of hybrid EoS that fulfils all these constraints and predicts a region in the mass-radius diagram that could be populated only by hybrid neutron stars with quark matter cores. A confirmation of this conjecture would be provided when the NICER radius measurement for the high-mass pulsar PSR J0740+6620 yields a radius less than 11 km. Would this radius measurement yield a result in excess of 12 km, this would allow for both, a purely hadronic and a hybrid nature of this star. In the latter case the maximum mass could reach $2.6~M_\\odot$ so that the lighter object in the asymmetric binary merger GW190814 could have been a hybrid star. We demonstrate that this high mass can be compatible with an early onset of deconfinement at star masses below $1~M_\\odot$ and the occurrence of low-mass twin stars. In such a case the remnant of GW170817 could be a long-lived hypermassive pulsar.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-12-31T18:07:21.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "multi-messenger astronomy",
      "deconfinement",
      "binary neutron star merger",
      "asymmetric binary merger gw190814",
      "hybrid neutron stars"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}