STAR results on medium properties and response of the medium to   energetic partons
  We report new STAR results on the consequences of highly energetic partons propagating through the medium formed in heavy ion collisions using correlations as an experimental probe. The recent results providing insights about color factor effects and path length dependence of parton energy loss, system size dependence of di-hadron fragmentation functions, conical emission and ridge formation in heavy ion collisions are presented. 
Bedangadas Mohanty (for the STAR Collaboration)