On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model

Figure 13

Dependencies of in central sources in Au-Au, Cu-Cu, -Au, Pb-Pb, Au-Em, and -Em collisions on or . The symbols are quoted in Tables 1–6, and the lines are our fitted results.

(a) Au+Au

(b) Cu+Cu

(c) +Au

(d) Pb+Pb

(e) Au+Em

(f) +Em