135 citations · 724 across the 26 of their papers we have counts for
14 papers · 1 filter
PCA of the spectral energy distribution and emission line properties of red 2MASS AGN
Joanna Kuraszkiewicz, Belinda J. Wilkes, Gary Schmidt +3
We analyze the spectral energy distributions (SEDs) and emission line properties of the red (J-K > 2) 2MASS AGN observed by Chandra using principle component analysis. The samp…
Constraints for the accretion disk evaporation rate in AGN from the existence of the Broad Line Region
B. Czerny, A. Rozanska, J. Kuraszkiewicz
We analyze the consequences of the hypothesis that the formation of the Broad Line Region is intrinsically connected with the existence of the cold accretion disk. We assume that t…
Reprocessing of X-rays in AGN. I. Plane parallel geometry -- test of pressure equilibrium
A. -M. Dumont, B. Czerny, S. Collin +1
We present a model of the vertical stratification and the spectra of an irradiated medium under the assumption of constant pressure. Such a solution has properties intermediate bet…
Variability of accretion flow in the core of the Seyfert galaxy NGC 4151
B. Czerny, V. T. Doroshenko, M. Nikolajuk +3
We analyze observations of the Seyfert galaxy NGC 4151 covering 90 years in the optical band and 27 years in the 2-10 keV X-ray band. We compute the Normalized Power Spectrum Densi…
Black hole masses from power density spectra: determinations and consequences
B. Czerny, M. Nikolajuk, M. Piasecki +1
We analyze the scaling of the X-ray power density spectra with the mass of the black hole on the example of Cyg X-1 and Seyfert 1 galaxy NGC 5548. We show that the high frequency t…
The UV spectra of NLS1s - Implications for their broad line regions
J. K. Kuraszkiewicz, B. J. Wilkes, B. Czerny +3
We study the UV spectra of NLS1 galaxies and compare them with typical Seyfert 1 galaxies and quasars. The NLS1 spectra show narrower UV lines as well as weaker CIV lambda 1549 and…