{
  "id": "1205.3128",
  "version": "v3",
  "published": "2012-05-14T18:08:04.000Z",
  "updated": "2015-12-14T09:34:05.000Z",
  "title": "The Blandford-Znajek theory revisited",
  "authors": [
    "Luigi Foschini"
  ],
  "comment": "6 pages, 1 figure, Title changed, completely revised, but the concepts are the same. Poster presented at the 28th Texas Symposium (Geneva, Switzerland, Dec 13-18, 2015)",
  "categories": [
    "astro-ph.HE",
    "gr-qc"
  ],
  "abstract": "The Blandford-Znajek theory (1977) is generally studied to understand the generation of powerful relativistic jets. However, it could also give important insights about the feedback between a rotating black hole, its ergosphere, and a surrounding accretion disk. The energy flow between these systems could be understood by studying the BZ power as a function of a slip factor, which in turn is defined as a function of the angular velocity of the black hole and the angular velocity of the magnetic field lines (generally anchored to the disk). The distinct stages could explain the different types of observed AGN (with/without jets), but could also help understanding the evolution of the merging of binary AGN.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2013-07-19T13:04:21.000Z",
      "title": "The Gravitational Asynchronous Machine",
      "abstract": "How relativistic jets are generated is one of the hottest topics of the modern astrophysics. Several theories have been proposed to explain the wide variety of observed phenomena, but none seems to catch the general consensus, although the mechanism proposed for black holes in 1977 by Blandford & Znajek (BZ) deserves some favor. In the following essay, I study some relatively unexplored features in the black hole/jet/disk feedback as derived from the application of the BZ theory.",
      "comment": "6 pages, 1 figure, Essay written for the Gravity Research Foundation 2012 Awards for Essays on Gravitation. Corrected a typo in Eq. (2)",
      "journal": null,
      "doi": null
    },
    {
      "version": "v3",
      "updated": "2015-12-14T09:34:05.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "blandford-znajek theory",
      "angular velocity",
      "magnetic field lines",
      "powerful relativistic jets",
      "distinct stages"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1114465,
      "adsabs": "2012arXiv1205.3128F"
    }
  }
}