  The final state of Au + Au collisions at sqrt{s}=130 AGeV at RHIC has been
reconstructed within the framework of the Buda-Lund hydrodynamical model, by
performing a simultaneous fit to final data on two-particle Bose-Einstein
correlations of the STAR and PHENIX Collaborations, and final identified single
particle spectra as measured by the PHENIX Collaboration. The results indicate
a strongly three-dimensional expansion with a four-velocity field that is
almost a spherically symmetric Hubble flow. We find large transverse
geometrical source sizes, R_G = 9.8 +- 1.2 fm, a relatively short mean
freeze-out time of tau0 = 6.1 +- 0.3 fm/c and a short duration of particle
emission, Delta_tau = 0.02 +- 1.5 fm/c. Most strikingly, we find an indication
for a hot central part or the hydrodynamically evolving core, characterized by
a central temperature of T0 = 202 +- 13 MeV, that is close to (or even above)
the deconfinement temperature of the quark-hadron phase transition. The best
fit indicates a cold surface temperature of T_s = 110 +- 16 MeV. When the
possibility of the hot center is excluded, the confidence level of the fit
decreases from 28.9 % to 1.2 %. Predictions are made for the rapidity
dependence of the slope parameters, for the transverse mass dependence of the
rapidity-width of the single-particle spectra, and for the transverse velocity
dependence of the non-indentical particle correlations.
