Higher Order Variability Measurements of Black Holes

Details Higher Order Variability Measurements of Black Holes Higher Order Variability Measurements of Black Holes

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21430101m&link_type=abstract

American Astronomical Society, AAS Meeting #214, #301.01; Bulletin of the American Astronomical Society, Vol. 41, p.713

Statistics

Scientific paper

Higher order variability statistics can be used to determine whether the phases of different components in a Fourier spectrum vary in a correlated manner. The presence of significant coherence in higher order statistics is indicative of coupled, non-linear variability. It can be shown that in several X-ray binaries, this coupled variability exists, both in broadband "noise" components of the power spectrum, and between the "noise" and the quasi-periodic oscillations. Numerical models will be shown which can reproduce the broad phenomenology in the observations.

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