Searching for flickering statistics in T CrB

Abstract

We analyze $V$-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 $R_{\mathrm{in}}$ and $\alpha$ are correlated on a certain interval and the most probable values are an inner disc radius of $R_{\mathrm{in}}\simeq 4\times 10^9$ cm and a viscosity of $\alpha \simeq 0.9$. 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.

9 pages, 10 figures, accepted for publication in MNRAS

References in corpus (1)

• Accretion disc viscosity: how big is alpha?

Cited by in corpus (16)

• Comprehensive Photometric Histories of All Known Galactic Recurrent Novae
• The 2015 super-active state of recurrent nova T CrB and the long term evolution after the 1946 outburst
• Active phases and flickering of a symbiotic recurrent nova T CrB
• XMM-Newton observation of MV Lyr and the sandwiched model confirmation
• Resolving different sources of fast X-ray variability of the dwarf nova RU Peg in quiescence
• Time lags of the flickering in cataclysmic variables as a function of wavelength
• Wavelet and R/S analysis of the X-ray flickering of cataclysmic variables
• Optical Flickering of the recurrent nova RS Ophiuchi: amplitude - flux relation
• Flickering study of nova like systems KR Aur and UU Aqr
• T CrB: overview of the accretion history, Roche-lobe filling, orbital solution, and radiative modeling
• Rms-flux relation and fast optical variability simulations of the nova-like system MV Lyr
• High Cadence Time-Series Photometry of V1647 Orionis
• Flickering around the outburst cycle in Kepler dwarf novae
• Locating the flickering source in polars
• Flickering of the jet-ejecting symbiotic star MWC 560
• Difference between the optical flickering colours of cataclysmic variables and symbiotic recurrent novae