{
  "id": "astro-ph/0602538",
  "version": "v2",
  "published": "2006-02-24T15:19:00.000Z",
  "updated": "2006-06-12T16:29:07.000Z",
  "title": "Effect of hyperon-hyperon interaction on bulk viscosity and r-mode instability in neutron stars",
  "authors": [
    "Debarati Chatterjee",
    "Debades Bandyopadhyay"
  ],
  "comment": "25 pages, 10 figures; two new figures added and results and discussion section revised; final version to appear in PRD",
  "journal": "Phys.Rev. D74 (2006) 023003",
  "doi": "10.1103/PhysRevD.74.023003",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We investigate the effect of hyperon matter including hyperon-hyperon interaction on bulk viscosity. Equations of state are constructed within the framework of a relativistic field theoretical model where baryon-baryon interaction is mediated by the exchange of scalar and vector mesons. Hyperon-hyperon interaction is also taken into account by the exchange of two strange mesons. This interaction results in a smaller maximum mass neutron star compared with the case without the interaction. The coefficient of bulk viscosity due to the non-leptonic weak process is determined by these equations of state. The interacting hyperon matter reduces the bulk viscosity coefficient in a neutron star interior compared with the no interaction case. The r-mode instability is more effectively suppressed in hyperon-hyperon interaction case than that without the interaction.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2006-06-12T16:29:07.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "97.60.Jd",
      "04.30.Db",
      "26.60.+c",
      "04.40.Dg"
    ],
    "keywords": [
      "bulk viscosity",
      "hyperon-hyperon interaction",
      "r-mode instability",
      "smaller maximum mass neutron star"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 25,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 711179
    }
  }
}