The Luminosity function of Narrow-Line Seyfert galaxies based on SDSS
  data
  We present measurements of AGN type 1 luminosity function in the forbidden
line [OIII]5007\AA using data from SDSS DR7. A special attention is paid to a
subclass of Seyfert galaxies - the Narrow-Line Seyfert galaxies. These galaxies
have relatively narrow broad permitted emission lines with FWHM $\leq 2000$
km/s. A new approach in calculation of the luminosity function is presented. We
also account for the large-scale structure variations of the Universe density.
The results obtained are compared with the ones from the literature. A
prediction of x-ray luminosity function based on our results shows an agreement
with observations. One of our preliminary conclusions is that NLSy1 seem to
occupy a more narrow range in the nuclear luminosity than BLSy1, but the
average values are within errors.
