3 papers
astro-ph.HE2009
Mass of black holes: The State of the Art
B. Czerny, M. Nikolajuk
In this small review we present the actual state the knowledge about weighting black holes. Black holes can be found in stellar binary systems in our Galaxy and in other nearby gal…
astro-ph2006
Black hole masses in NLS1 galaxies from the X-ray excess variance method
M. Nikolajuk, P. Gurynowicz, B. Czerny
We estimate black hole masses in Narrow Line Seyfert 1 (NLS1) galaxies at the basis of their X-ray excess variance. We apply the standard approach appropriate for Broad Line Seyfer…
astro-ph2001
Disk/corona model of the mean spectra of radio-quiet and radio-loud QSO
Marek Nikolajuk, Bozena Czerny
We test the disk/corona model of Janiuk et al. (2000) against the composite mean optical/UV/soft X-ray spectrum of radio loud and radio quiet quasars from Laor et al. (1997) which…