Testing the X-ray variability of active galactic nuclei with the nonlinear prediction method

Abstract

The analysis of eight EXOSAT X-ray lightcurves of six active galactic nuclei by nonlinear prediction methods indicates that the observed short time-scale variability is truly stochastic and is not caused by deterministic chaos. This result favors X-ray emission models with mutliple centers of production of hot, possibly relativistic electrons.

TeX file, uses epsf.sty and mn.tex, 8 pages, 8 Postscript figures, accepted for publication in MNRAS (Sept. 96)

Cited by in corpus (16)

• Are the Variations in Quasar Optical Flux Driven by Thermal Fluctuations?
• Black hole masses from power density spectra: determinations and consequences
• Variability of Active Galactic Nuclei from the Optical to X-ray Regions
• GRMHD prediction of coronal variability in accreting black holes
• The role of the central stellar cluster in active galactic nuclei. I. Semi-analytical model
• Power density spectrum of NGC 5548 and the nature of its variability
• Variability of accretion flow in the core of the Seyfert galaxy NGC 4151
• The Nature of the Emission Components in the Quasar/NLS1 PG1211+143
• A Simple New Method For Analysing Gapped Time-Series: Search For a High Frequency Cut-off In The X-ray Power Spectrum of MCG -6-30-15
• Simulations of X-ray spectral/timing properties in a propagation model of variability of accreting black holes
• Revisiting Evidence of Chaos in X-ray Light Curves: The Case of GRS 1915+105
• Testing a model of variability of X-ray reprocessing features in Active Galactic Nuclei
• Flare-induced fountains and buried flares in AGN
• Modelling the variability of the Fe K alpha line in accreting black holes
• X-ray energy and power spectra of Seyfert 1 and Narrow Line Seyfert 1 galaxies: comparison to Black Hole Binaries
• Matter Outflows from AGN: A Unifying Model