AdS gravaster and bulk-cone singularities

We can examine the structure of bulk geometry via singularities of dual CFT correlators. Recently, bulk-cone singularities of the two-point correlation functions have been analyzed on the AdS Schwarzschild spacetime. In this talk, we construct the AdS gravastar model, which has a horizonless compact object at the center instead of the black hole, and investigate the bulk-cone singularities of the two-point correlation function on this spacetime. We mainly see the numerical results for the smeared correlation function and discuss its implication.