Testing propagating mass accretion rate fluctuations model PROPFLUC on black hole X-ray binaries

Over the past 20 years, a consistent phenomenology has been established to describe the variability properties of black hole X‐ray binaries. However, the physics behind the observational data is still poorly understood. The recently proposed model PROPFLUC assumes a truncated disc/hot inner flow geometry, with mass accretion rate fluctuations propagating through a precessing inner flow. These two processes give rise respectively to broad band variability and a quasi‐periodic oscillation (QPO) on the precession frequency. We recently applied systematically for the first time PROPFLUC on a black hole candidate (MAXI J1543‐564) in order to compare the results of phenomenological and physical modeling of the source power spectrum and to give a physical interpretation of the rising phase of the source outburst. Here we resume the results of our study on MAXI J1543‐564 and we discuss future PROPFLUC implementations.