{
  "id": "1409.5447",
  "version": "v1",
  "published": "2014-09-18T20:09:03.000Z",
  "updated": "2014-09-18T20:09:03.000Z",
  "title": "Event-Horizon-Telescope Evidence for Alignment of the Black Hole in the Center of the Milky Way with the Inner Stellar Disk",
  "authors": [
    "Dimitrios Psaltis",
    "Ramesh Narayan",
    "Vincent L. Fish",
    "Avery E. Broderick",
    "Abraham Loeb",
    "Sheperd S. Doeleman"
  ],
  "comment": "To appear in the Astrophysical Journal",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "Observations of the black hole in the center of the Milky Way with the Event Horizon Telescope at 1.3 mm have revealed a size of the emitting region that is smaller than the size of the black-hole shadow. This can be reconciled with the spectral properties of the source, if the accretion flow is seen at a relatively high inclination (50-60 degrees). Such an inclination makes the angular momentum of the flow, and perhaps of the black hole, nearly aligned with the angular momenta of the orbits of stars that lie within 3 arcsec from the black hole. We discuss the implications of such an alignment for the properties of the black hole and of its accretion flow. We argue that future Event-Horizon-Telescope observations will not only refine the inclination of Sgr A* but also measure precisely its orientation on the plane of the sky.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-09-18T20:09:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "black hole",
      "inner stellar disk",
      "milky way",
      "event-horizon-telescope evidence",
      "accretion flow"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0004-637X/798/1/15",
      "journal": "The Astrophysical Journal",
      "year": 2015,
      "month": "Jan",
      "volume": 798,
      "number": 1,
      "pages": 15
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1318307,
      "adsabs": "2015ApJ...798...15P"
    }
  }
}