TY  - JOUR
A1  - Thiel, Marco
A1  - Romano, Maria Carmen
A1  - Schwarz, Udo
A1  - Kurths, Jürgen
A1  - Hasinger, Günther
A1  - Belloni, Tomaso
T1  - Nonlinear Time series analysis of the X-ray flux of compact objects
N2  - We analyse the X-ray light curves of compact objects using linear and nonlinear time series analysis methods. A Power Density Spectrum (PDS) describes the overall second order properties of the observed data well. To look beyond we propose the nonlinear Q-statistic to detect an asymmetry of the time series. This allows us to find relevant time scales. This method even grants a subclassification of the known states of X-ray sources.
Y1  - 2001
SN  - 0004-640x
ER  -