{
  "id": "1304.1871",
  "version": "v2",
  "published": "2013-04-06T09:58:15.000Z",
  "updated": "2013-04-12T02:50:06.000Z",
  "title": "Neutron stars in a perturbative $f(R)$ gravity model with strong magnetic fields",
  "authors": [
    "Myung-Ki Cheoun",
    "Cemsinan Deliduman",
    "Can Güngör",
    "Vildan Keleş",
    "C. Y. Ryu",
    "Toshitaka Kajino",
    "Grant J. Mathews"
  ],
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We investigate the effect of a strong magnetic field on the structure of neutron stars in a model with perturbative $f(R)$ gravity. The effect of an interior strong magnetic field of about $10^{17 \\sim 18}$ G on the equation of state is derived in the context of a quantum hadrodynamics (QHD) model. We solve the modified spherically symmetric hydrostatic equilibrium equations derived for a gravity model with $f(R)=R+\\alpha R^2$. Effects of both the finite magnetic field and the modified gravity are detailed for various values of the magnetic field and the perturbation parameter $\\alpha$ along with a discussion of their physical implications. We show that there exists a parameter space of the modified gravity and the magnetic field strength, in which even a soft equation of state can accommodate a large ($> 2$ M$_\\odot$) maximum neutron star mass through the modified mass-radius relation.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-04-12T02:50:06.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "neutron star",
      "gravity model",
      "symmetric hydrostatic equilibrium equations",
      "spherically symmetric hydrostatic equilibrium"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/1475-7516/2013/10/021",
      "journal": "Journal of Cosmology and Astro-Particle Physics",
      "year": 2013,
      "month": "Oct",
      "volume": 2013,
      "number": 10,
      "pages": "021"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1227427,
      "adsabs": "2013JCAP...10..021C"
    }
  }
}