Systematic Study of Azimuthal Anisotropy for Charged Hadron in Relativistic Nucleus-Nucleus Collisions at RHIC-PHENIX

In this work, we report the thermal property of the matter created in relativistic heavy ion collisions by the systematic study of v₂ for charged hadrons. We study the dependence on collision energies, collision size and particle species, comparing the v₂ in Au+Au and Cu+Cu collisions for some centrality bins.  We tested the scaling behavior of v₂ depending on  the geometrical eccentricity at same N_part and depending on N_part at same geometrical eccentricity.