The Luminosity function of Narrow-Line Seyfert galaxies based on SDSS data

Abstract

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.