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We present the clustering measurement of hard X-ray selected AGN in the localUniverse. We used a sample of 199 sources spectroscopically confirmed detectedby Swift-BAT in its 15-55 keV all-sky survey. We measured the real spaceprojected auto-correlation function and detected a signal significant onprojected scales lower than 200 Mpc/h. We measured a correlation length ofr0=5.56+0.49-0.43 Mpc/h and a slope {\gamma}=1.64-0.08 -0.07. We also measuredthe auto-correlation function of Type I and Type II AGN and found highercorrelation length for Type I AGN. We have a marginal evidence of luminositydependent clustering of AGN, as we detected a larger correlation length ofluminous AGN than that of low luminosity sources. The corresponding typicalhost DM halo masses of Swift-BAT are log(MDMH) 12-14 h^-1 M/M_sun, depending onthe subsample. For the whole sample we measured log(MDMH)\sim 13.15 h-1 M/M_sunwhich is the typical mass of a galaxy group. We estimated that the local AGNpopulation has a typical lifetime tau_AGN \sim 0.7 Gyr, it is powered by SMBHwith mass MBH \sim 1-10x10^8 M_\odot and accreting with very low efficiency,log(epsilon)-2.0. We also conclude that local AGN host galaxies are typicallyred-massive galaxies with stellar mass of the order 2-80x10^10 h^-1 M_sun. Wecompared our results with clustering predictions of merger-driven AGNtriggering models and found a good agreement.

AGN clustering in the local Universe: an unbiased picture from Swift-BAT