{
  "id": "1611.00076",
  "version": "v1",
  "published": "2016-10-31T23:03:12.000Z",
  "updated": "2016-10-31T23:03:12.000Z",
  "title": "Gravitational lensing by compact objects within plasma",
  "authors": [
    "Adam Rogers"
  ],
  "comment": "8 pages, 2 figures. Summary of an invited parallel session talk given in the GL3 session at the 14th Marcel Grossmann meeting, University of Rome \"La Sapienza\", Rome, July 12-18, 2015. For more details, see A. Rogers, 2015, MNRAS, 451, 1, 17-25",
  "categories": [
    "gr-qc",
    "astro-ph.HE"
  ],
  "abstract": "Frequency-dependent gravitational lens effects are found for trajectories of electromagnetic rays passing through a distribution of plasma near a massive object. Ray propagation through plasma adds extra terms to the equations of motion that depend on the plasma refractive index. For low-frequency rays these refractive effects can dominate, turning the gravitational lens into a mirror. While light rays behave like particles with an effective mass given by the plasma frequency in a medium with constant density, an inhomogeneous plasma introduces more complicated behavior even for the spherically symmetric case. As a physical example, the pulse profile of a compact object sheathed in a dense plasma is examined, which introduces dramatic frequency-dependent shifts from the behavior in vacuum.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-10-31T23:03:12.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "compact object",
      "frequency-dependent gravitational lens effects",
      "plasma adds extra terms",
      "dramatic frequency-dependent shifts",
      "light rays behave"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}