{
  "id": "astro-ph/0506443",
  "version": "v1",
  "published": "2005-06-19T23:12:45.000Z",
  "updated": "2005-06-19T23:12:45.000Z",
  "title": "Chandra Observations of Shock Kinematics in Supernova Remnant 1987A",
  "authors": [
    "S. A. Zhekov",
    "R. McCray",
    "K. J. Borkowski",
    "D. N. Burrows",
    "S. Park"
  ],
  "comment": "12 pages, 3 figures, accepted for publication in ApJL",
  "journal": "Astrophys.J.628:L127-L130,2005",
  "doi": "10.1086/432794",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We report the first results from deep X-ray observations of the SNR 1987A with the Chandra LETG. Temperatures inferred from line ratios range from 0.1 - 2 keV and increase with ionization potential. Expansion velocities inferred from X-ray line profiles range from 300 - 1700 km/s, much less than the velocities inferred from the radial expansion of the radio and X-ray images. We can account for these observations with a scenario in which the X-rays are emitted by shocks produced where the supernova blast wave strikes dense protrusions of the inner circumstellar ring, which are also responsible for the optical hot spots.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-06-19T23:12:45.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "supernova remnant 1987a",
      "chandra observations",
      "shock kinematics",
      "supernova blast wave strikes dense",
      "blast wave strikes dense protrusions"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 685430
    }
  }
}