Investigating the Theory of Propagating Fluctuations with Numerical Models of Stochastic Accretion Discs
Samuel G. D. Turner,
Christopher S. Reynolds
Abstract:Across a large range of scales, accreting sources show remarkably similar patterns of variability, most notably the log-normality of the luminosity distribution and the linear rootmean square (rms)-flux relationship. These results are often explained using the theory of propagating fluctuations in which fluctuations in the viscosity create perturbations in the accretion rate at all radii, propagate inwards and combine multiplicatively. While this idea has been extensively studied analytically in a linear regim… Show more
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