{
  "id": "1509.09205",
  "version": "v1",
  "published": "2015-09-30T15:01:24.000Z",
  "updated": "2015-09-30T15:01:24.000Z",
  "title": "Efficient magnetic-field amplification due to the Kelvin-Helmholtz instability in binary neutron star mergers",
  "authors": [
    "Kenta Kiuchi",
    "Pablo Cerdá-Durán",
    "Koutarou Kyutoku",
    "Yuichiro Sekiguchi",
    "Masaru Shibata"
  ],
  "comment": "13 pages, 10 figures, submitted to PRD",
  "categories": [
    "astro-ph.HE",
    "astro-ph.CO",
    "astro-ph.SR",
    "gr-qc",
    "nucl-th"
  ],
  "abstract": "We explore magnetic-field amplification due to the Kelvin-Helmholtz instability during binary neutron star mergers. By performing high-resolution general relativistic magnetohydrodynamics simulations with a resolution of $17.5$ m for $4$--$5$ ms after the onset of the merger on the Japanese supercomputer \"K\", we find that an initial magnetic field of moderate maximum strength $10^{13}$ G is amplified at least by a factor of $\\approx 10^3$. We also explore the saturation of the magnetic-field energy and our result shows that it is likely to be $\\gtrsim 4 \\times 10^{50}$ erg, which is $\\gtrsim 0.1\\%$ of the bulk kinetic energy of the merging binary neutron stars.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-09-30T15:01:24.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "04.25.D-",
      "04.30.-w",
      "04.40.Dg"
    ],
    "keywords": [
      "binary neutron star mergers",
      "efficient magnetic-field amplification",
      "kelvin-helmholtz instability",
      "high-resolution general relativistic magnetohydrodynamics simulations"
    ],
    "publication": {
      "doi": "10.1103/PhysRevD.92.124034"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1395438
    }
  }
}