Gas dynamics in the galactic centre: Clump accretion and outflows

We present numerical models of the gas dynamics in the central parsec of the Galaxy, from its origin as stellar winds, until its capture by Sgr A^∗, the central massive black hole. We show that the gas forms a two-phase medium, with cold clumps embedded in a hot tenuous gas. We find the accretion rate to be variable, due to the effect of the stellar orbits and the stochastic accretion of clumps. We suggest that the recently discovered infalling cloud, G2, could be one of the predicted clumps. We also study the possibility of detecting the effect of a recent outflow from Sgr A^∗.