，成果详细信息-凯发网

we use the standard runge-kutta method to solve a set of basic equations describing black hole accretion flows composed of two-temperature plasma. we do not invoke any extra energy transport mechanism, such as thermal conduction, and we do not specify any ad hoc outer boundary condition for the advection-dominated accretion flow (adaf) solution. we find that in the case of high viscosity and nonzero radiative cooling, the adaf solution can have an asymptotic approach to the shakura-sunyaev disk (ssd) solution and that the ssd-adaf transition radius is close to the central black hole. our results further prove the mechanism of thermal instability-triggered ssd-adaf transition suggested previously by takeuchi & mineshige and gu & lu.