From Pb+Pb to photon+Pb collisions: Understanding the Quark-Gluon Plasma with Flow Measurements from ATLAS

<!--HTML--><p><span><span>Angular correlations measurements have long been used to understand the properties of the quark-gluon plasma (QGP) created in heavy ion collisions.&nbsp; Over the last several years such measurements have also been used in pp and p+Pb collisions to investigate whether a QGP is created in those systems as well.&nbsp; New measurements from ATLAS, including those using particles from the decay of heavy mesons and in photo-nuclear collisions, are providing new information about the transport properties of the QGP and the conditions under which this matter can be created.&nbsp; This talk will discuss recent measurements and their implications on our understanding of the QGP.</span></span></p>