X-ray luminosity functions of different morphological and X-ray type AGN populations
Pović, M. · García, A. M. Pérez · Sánchez-Portal, M. · Bongiovanni, A. · Cepa, J. · Lorenzo, M. Fernández · Lara-López, M. A. · Gallego, J. · Ederoclite, A. · Márquez, I. · Masegosa, J. · Alfaro, E. · Castañeda, H. · González-Serrano, J. I. · González, J. J.
Original · EN
Luminosity functions are one of the most important observational clues when studying galaxy evolution over cosmic time. In this paper we present the X-ray luminosity functions of X-ray detected AGN in the SXDS and GWS fields. The limiting fluxes of our samples are 9.0x10(-15) and 4.8x10(-16) erg/cm²/sec(-1) in the 0.5 - 7.0 keV band in the two fields, respectively. We carried out analysis in three X-ray bands and in two redshift intervals up to z < 1.4. Moreover, we derive the luminosity functions for different optical morphologies and X-ray types. We confirm strong luminosity evolution in all three bands, finding the most luminous objects at higher redshift. However, no signs of density evolution are found in any tested X-ray band. We obtain similar results for compact and early-type objects. Finally, we observe the `Steffen effect', where X-ray type-1 sources are more numerous at higher luminosities in comparison with type-2 sources.
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