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Nonlinear Time series analysis of the X-ray flux of compact objects

  • 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.

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Author:Marco Thiel, Maria Carmen RomanoORCiD, Udo Schwarz, Jürgen KurthsORCiDGND, Günther Hasinger, Tomaso Belloni
Document Type:Article
Year of first Publication:2001
Year of Completion:2001
Release Date:2017/03/24
Source:Astrophysics and space science. - ISSN: 0004-640x. - (Supplement 1). - 276 (2001), S. 187 - 188
Organizational units:Zentrale und wissenschaftliche Einrichtungen / Interdisziplinäres Zentrum für Dynamik komplexer Systeme