{
  "id": "0903.0164",
  "version": "v1",
  "published": "2009-03-01T19:04:14.000Z",
  "updated": "2009-03-01T19:04:14.000Z",
  "title": "Tidal Capture by a Black Hole and Flares in Galactic Centres",
  "authors": [
    "A. Gomboc",
    "A. Cadez",
    "M. Calvani",
    "U. Kostic"
  ],
  "comment": "3 pages, 1 figure",
  "journal": "Relativistic Astrophysics Legacy and Cosmology - Einstein's, ESO Astrophysics Symposia, Springer-Verlag Berlin Heidelberg, 2008, p. 141",
  "doi": "10.1007/978-3-540-74713-0_32",
  "categories": [
    "astro-ph.HE",
    "astro-ph.GA"
  ],
  "abstract": "We present the telltale signature of the tidal capture and disruption of an object by a massive black hole in a galactic centre. As a result of the interaction with the black hole's strong gravitational field, the object's light curve can flare-up with characteristic time of the order of 100 sec \\times (M_{bh} / 10^6 M_{Solar}). Our simulations show that general relativity plays a crucial role in the late stages of the encounter in two ways: (i) due to the precession of perihelion, tidal disruption is more severe, and (ii) light bending and aberration of light produce and enhance flares seen by a distant observer. We present our results for the case of a tidally disrupted Solar-type star. We also discuss the two strongest flares that have been observed at the Galactic centre. Although the first was observed in X-rays and the second in infra-red, they have almost identical light curves and we find it interesting that it is possible to fit the infra-red flare with a rather simple model of the tidally disrupted comet-like or planetary object. We discuss the model and possible scenarios how such an event can occur.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-03-01T19:04:14.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "galactic centre",
      "tidal capture",
      "black holes strong gravitational field",
      "objects light curve",
      "general relativity plays"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 3,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 814473,
      "adsabs": "2007ralc.conf..141G"
    }
  }
}