Collective Properties of the Nuclear Matter from the STAR Experiment at RHIC

The study of a collective flow offers valuable insights into the dynamics and properties of the Quark-Gluon Plasma (QGP) medium produced in heavy-ion collisions. The directed flow (v1) slope (dv1/dy) of protons at mid-rapidity is expected to be sensitive to the first-order phase transition. The scaling of the elliptic flow (v2) with the number of constituent quarks (NCQ) can be regarded as a signature of the QGP formation. The triangular flow (v3) typically originates from fluctuations and can offer constraints on the initial state geometry and fluctuations. The STAR experiment at RHIC has gathered data across a wide range of energies and systems. The second phase of the Beam Energy Scan program, including a Fixed-Target mode is done to collect high-statistics data on Au + Au collisions in the high baryon density region of the Quantum Chromodynamics (QCD) phase diagram. In these proceedings, we discuss selected results on the collective properties of the nuclear matter from the STAR experiment at RHIC.