{
  "id": "2010.08358",
  "version": "v1",
  "published": "2020-10-16T12:53:25.000Z",
  "updated": "2020-10-16T12:53:25.000Z",
  "title": "Relativistic reflection in NGC 4151",
  "authors": [
    "Michal Szanecki",
    "Andrzej Niedzwiecki",
    "Andrzej A. Zdziarski"
  ],
  "comment": "Submitted to ApJ",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We investigate the X-ray spectrum of the Seyfert galaxy NGC 4151 using the simultaneous Suzaku/NuSTAR observation and flux-resolved INTEGRAL spectra supplemented by Suzaku and XMM observations. Our best spectral solution indicates that the narrow Fe Kalpha line is produced in Compton-thin matter at the distance of several hundred gravitational radii. In such a model, we find a weak but significant relativistic reflection from a disk truncated at about ten gravitational radii when the source is in bright X-ray states. We do not find evidence for relativistic reflection in the dim X-ray state. We also rule out models with X-ray emission dominated by a source located very close to the black hole horizon, which was proposed in previous works implementing the lamp-post geometry for this source. We point out that accurate computation of the thermal Comptonization spectrum and its distortion by strong gravity is crucial in applications of the lamp-post geometry NuSTAR to the data.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-10-16T12:53:25.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gravitational radii",
      "narrow fe kalpha line",
      "bright x-ray states",
      "significant relativistic reflection",
      "seyfert galaxy ngc"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}