  A new analytical approach is presented for analysis of two-particle azimuthal
correlations in heavy ion collisions at relativistic energies. This approach
suggests that elliptic flow measured by experiment has a compound structure,
namely, that it may come from superposition of several components. General
expressions have been derived for the two-particle correlation function
isolating the contribution due to anisotropic flow. The model of compound flow
takes into account the number of jets per event, average multiplicity per jet,
dependence of jet yield on the orientation with respect to the reaction plane,
and independent "soft" particle production.
