{
  "id": "1705.05123",
  "version": "v1",
  "published": "2017-05-15T09:11:37.000Z",
  "updated": "2017-05-15T09:11:37.000Z",
  "title": "Optical Variability of Narrow and Broad line Seyfert 1 galaxies",
  "authors": [
    "Suvendu Rakshit",
    "C. S. Stalin"
  ],
  "comment": "12 pages, 11 figures, 2 tables, Accepted by ApJ",
  "categories": [
    "astro-ph.GA",
    "astro-ph.HE"
  ],
  "abstract": "We studied optical variability (OV) of a large sample of narrow-line Seyfert 1 (NLSy1) and broad-line Seyfert 1 (BLSy1) galaxies with z<0.8 to investigate any differences in their OV properties. Using archival optical V-band light curves from the Catalina Real Time Transient Survey that span 5-9 years and modeling them using damped random walk, we estimated the amplitude of variability. We found NLSy1 galaxies as a class show lower amplitude of variability than their broad-line counterparts. In the sample of both NLSy1 and BLSy1 galaxies, radio-loud sources are found to have higher variability amplitude than radio-quiet sources. Considering only sources that are detected in the X-ray band, NLSy1 galaxies are less optically variable than BLSy1 galaxies. The amplitude of variability in the sample of both NLSy1 and BLSy1 galaxies is found to be anti-correlated with Fe II strength but correlated with the width of the H-beta line. The well-known anti-correlation of variability-luminosity and the variability-Eddington ratio is present in our data. Among the radio-loud sample, variability amplitude is found to be correlated with radio-loudness and radio-power suggesting jets also play an important role in the OV in radio-loud objects, in addition to the Eddington ratio, which is the main driving factor of OV in radio-quiet sources.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-05-15T09:11:37.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "broad line seyfert",
      "optical variability",
      "blsy1 galaxies",
      "catalina real time transient survey",
      "archival optical v-band light curves"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}