Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...354..847l&link_type=abstract
Astronomy and Astrophysics, v.354, p.847-852 (2000)
Astronomy and Astrophysics
Astrophysics
2
Methods: Data Analysis, Methods: Statistical, Galaxies: Quasars: Individual: 3C 273, Galaxies: Individual: Ngc 5548, Galaxies: Seyfert, X-Rays: Galaxies
Scientific paper
A deterministic component in the X-ray photon series from Seyfert 1 galaxies and quasars, observed by ROSAT, is studied with the wavelet spectra method. A semi-regular deterministic modulation of the photon series is stronger and occurs more frequently in Seyfert 1 nuclei than in quasars indicating that by studying statistical properties of an X-ray photon train it is possible to identify unambiguously the character of its source. An interpretation of these differences is suggested within a scenario provided by a black hole nuclear cluster paradigm.
Liszka Ludwik
Pacholczyk A. G.
Stoeger William R.
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