Title:Velocity dispersion profiles of globular clusters: a mirror of tidal effects, modified gravity and structural 
evolution

Abstract:
I present the recent developments in the analysis of the velocity dispersion profiles of Galactic globular 
clusters in the light of the growing body of observational data and theoretical modelling.
In particular, extensive spectroscopic surveys performed on the giant globular cluster omega Centauri and in 
the outermost globulars (populating the outer halo of the Milky Way) have been used to test the effects of 
the tidal interaction of these stellar systems with the Milky Way potential as well as the fundamental law of 
gravity.
I will show that the comparison with suitable theoretical models and N-body simulations provides important 
clues and constraints on the orbit and structural evolution of these objects and on the validity of alternative 
gravitation theories.