We present the clustering measurement of hard X-ray selected AGN in the local Universe .
We used a sample of 199 sources spectroscopically confirmed detected by Swift -BAT in its 15-55 keV all-sky survey .
We measured the real space projected auto-correlation function and detected a signal significant on projected scales lower than 200 Mpc/h .
We measured a correlation length of r _ { 0 } =5.56 ^ { +0.49 } _ { -0.43 } Mpc/h and a slope \gamma =1.64 _ { -0.07 } ^ { -0.08 } .
We also measured the auto-correlation function of Type I and Type II AGN and found higher correlation length for Type I AGN .
We have a marginal evidence of luminosity dependent clustering of AGN , as we detected a larger correlation length of luminous AGN than that of low luminosity sources .
The corresponding typical host DM halo masses of Swift -BAT are \sim log ( M _ { DMH } ) \sim 12-14 h ^ { -1 } M/M _ { \odot } , depending on the subsample .
For the whole sample we measured log ( M _ { DMH } ) \sim 13.15 h ^ { -1 } M/M _ { \odot } which is the typical mass of a galaxy group .
We estimated that the local AGN population has a typical lifetime \tau _ { AGN } \sim 0.7 Gyr , it is powered by SMBH with mass M _ { BH } \sim 1-10 \times 10 ^ { 8 } M _ { \odot } and accreting with very low efficiency , log ( \epsilon ) \sim -2.0 .
We also conclude that local AGN host galaxies are typically red-massive galaxies with stellar mass of the order 2-80 \times 10 ^ { 10 } h ^ { -1 } M _ { \odot } .
We compared our results with clustering predictions of merger-driven AGN triggering models and found a good agreement .