{
  "id": "1602.08287",
  "version": "v1",
  "published": "2016-02-26T11:58:11.000Z",
  "updated": "2016-02-26T11:58:11.000Z",
  "title": "Effects of variability of X-ray binaries on the X-ray luminosity functions of Milky Way",
  "authors": [
    "Nazma Islam",
    "Biswajit Paul"
  ],
  "comment": "Accepted for publication in New Astronomy",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "The X-ray luminosity functions of galaxies have become a useful tool for population studies of X-ray binaries in them. The availability of long term light-curves of X-ray binaries with the All Sky X-ray Monitors opens up the possibility of constructing X-ray luminosity functions, by also including the intensity variation effects of the galactic X-ray binaries. We have constructed multiple realizations of the X-ray luminosity functions (XLFs) of Milky Way, using the long term light-curves of sources obtained in the 2-10 keV energy band with the RXTE-ASM. The observed spread seen in the value of slope of both HMXB and LMXB XLFs are due to inclusion of variable luminosities of X-ray binaries in construction of these XLFs as well as finite sample effects. XLFs constructed for galactic HMXBs in the luminosity range 10^{36} - 10^{39} erg/sec is described by a power-law model with a mean power-law index of -0.48 and a spread due to variability of HMXBs as 0.19. XLFs constructed for galactic LMXBs in the luminosity range 10^{36} - 10^{39} erg/sec has a shape of cut-off power-law with mean power-law index of -0.31 and a spread due to variability of LMXBs as 0.07.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-02-26T11:58:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "x-ray binaries",
      "milky way",
      "mean power-law index",
      "long term light-curves",
      "variability"
    ],
    "publication": {
      "doi": "10.1016/j.newast.2016.02.008"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1424512
    }
  }
}