SIMBAD references

2000A&A...354..847L - Astronomy and Astrophysics, volume 354, 847-852 (2000/2-3)

Extraction of a deterministic component from ROSAT X-ray data using a wavelet transform and the principal component analysis. II. The data analysis.

LISZKA L., PACHOLCZYK A.G. and STOEGER W.R.

Abstract (from CDS):

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.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - methods: statistical - galaxies: quasars: individual: 3C 273 - galaxies: individual: NGC 5548 - galaxies: Seyfert - X-rays: galaxies

Simbad objects: 28

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