YITP WORKSHOP ON
Quasi-Periodic Oscillations and Time Variabilities of Accretion Flows
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ABSTRACT

NAME
INSTITUTE
TITLE OF THE TALK
S. Mineshige
Kyoto University, Japan
A new cellular-automaton model for black-hole variability
A new cellular-automaton model for variability of black-hole objects is presented.
The renewed cellular-automaton rule which describes the procedure of model calculations is based on the induction equation of magnetic fields and consists of two processes: input of fluctuations in the magnetic field and dissipation of magnetic energy in the form of magnetic reconnection.
This model can nicely reproduce the basic observational features of the black-hole variability, such as aperiodic fluctuations in light curves, 1/$f$-type power spectra, and lognormal flux distribution.
This successful reproduction strongly indicates magnetic fields being the origin of producing black-hole variability.


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