{
  "annotation_id": "7841fa46-0184-4b57-b501-95f839064ceb",
  "date_created": "2026-03-02T18:00:01.496000Z",
  "date_modified": "2026-03-02T18:00:01.496000Z",
  "file_hash": "115d4826cbd81970cd21cea530d247c0fd7899d6ee6b65e9edd718bc4d6a43b0",
  "private": false,
  "record": {
    "abstract": "Protoneutron stars are hot and lepton rich objects formed as a result of type\nII supernovae explosion. This paper describes results of analysis of\nprotoneutron star models constructed under the assumptions that strange\nparticles are present in the core. All calculations have been performed for the\nneutrino opaque matter when the entropy per baryon is of the order 2. The\nequation of state which is crucial for the structure and composition of a star\nhas been obtained in the framework of the chiral SU(3) model and compared with\nthe one involving derivative coupling of baryons to mesons. Of special interest\nin this paper is the comparison of the two protoneutron star models with those\nformed when neutrinos leak out of the system, described as cool, deleptonized\nneutron stars. It has been shown that the maximum mass of the hot protoneutron\nstar with trapped neutrinos is close to 1.9 M (the Sun Mass) in case of the\nSU(3) model. However, deleptonization reduces the value of stable protoneutron\nstar mass significantly to 1.5 M.",
    "arxiv_id": "nucl-th/0403060",
    "authors": [
      "Ilona Bednarek",
      "Marcin Keska",
      "Ryszard Manka"
    ],
    "categories": [
      "nucl-th"
    ],
    "title": "Properties and evolution of a protoneutron star in the enlarged SU(3)   model",
    "url": "https://arxiv.org/abs/nucl-th/0403060"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0c05681f-d69b-48f6-91e3-6d4799ed4af5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}