Bibcode
Dobrotka, A.; Hric, L.; Casares, J.; Shahbaz, T.; Martínez-Pais, I. G.; Muñoz-Darias, T.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 402, Issue 4, pp. 2567-2574.
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3
2010
Citations
20
Refereed citations
17
Description
We analyse V-band photometry of the aperiodic variability in T CrB. By
applying a simple idea of angular momentum transport in the accretion
disc, we have developed a method to simulate the statistical
distribution of flare durations with the assumption that the aperiodic
variability is produced by turbulent elements in the disc. Both
cumulative histograms with Kolmogorov-Smirnov tests, and power density
spectra are used to compare the observed data and simulations. The input
parameters of the model Rin and α are correlated on a
certain interval and the most probable values are an inner disc radius
of Rin ~= 4 × 109cm and a viscosity of
α ~= 0.9. The disc is then weakly truncated. We find that the
majority of turbulent events producing flickering activity are
concentrated in the inner parts of the accretion disc.
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