{
  "id": "1909.13414",
  "version": "v1",
  "published": "2019-09-30T01:15:24.000Z",
  "updated": "2019-09-30T01:15:24.000Z",
  "title": "Numerical simulation of magnetic reconnection around a black hole",
  "authors": [
    "Mika Inda-Koide",
    "Shinji Koide",
    "Ryogo Morino"
  ],
  "comment": "22 pages, 9 Figures",
  "journal": "The Astrophysical Journal 883, id 69, 9 pp. (2019)",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We performed numerical simulations of general relativistic magnetohydrodynamics with uniform resistivity to investigatethe occurrence of magnetic reconnection in a split-monopole magnetic field around a Schwarzschild black hole. We found that magnetic reconnection happens near the black hole at its equatorial plane. The magnetic reconnection has a point-like reconnection region and slow shock waves, as in the Petschek reconnection model. The magnetic reconnection rate decreases as the resistivity becomes smaller. When the global magnetic Reynolds number is $10^4$ or larger, the magnetic reconnection rate increases linearly with time from $2 \\tau_{\\rm S}$ to $\\sim 10 \\tau_{\\rm S}$ ($\\tau_{\\rm S}=r_{\\rm S}/c, r_{\\rm S}$ is the Schwarzschild radius and $c$ is the speed of light). The linear increase of the reconnection rate agrees with the magnetic reconnection in the Rutherford regime of the tearing mode instability.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-09-30T01:15:24.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "numerical simulation",
      "global magnetic reynolds number",
      "magnetic reconnection rate decreases",
      "magnetic reconnection rate increases",
      "slow shock waves"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 22,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}