7. SUMMARY

Information on the dynamical parameters of the Universe are coming from the Big Bang nucleosynthesis, from the fluctuations in the temperature and polarization of the cosmic microwave background radiation, from the large scale structures of galaxies, from supernova observations and from many other cosmological effects that may not yet be of interesting precision. The results of different analyses are now converging towards agreement when in the past disagreements of the order of 100% have been known.

In this review we have taken the attitude that remaining disagreements reflect systematic errors coming either from the observations or from differences in the methods of analysis. We have then compiled the most precise parameter values, combined them and added our estimates of such systematic errors. This we have done for the baryonic density parameter _b h², the density parameter of the matter component _m, the density parameter of the cosmological constant , the spectral index of scalar fluctuations n_s, the equation of state of the cosmological constant w, and the deceleration parameter q₀. In addition we quote the best values of the Hubble parameter H₀ and the total density parameter ₀ from other sources. In Table 2 we summarize our results.

Table 2. Best values of the dynamical parameters. The errors include 1 statistical errors and our estimates of systematic errors, except for ₀ which is statistical only. The Hubble constant H₀ is given in units of km s^-1 Mpc^-1

Parameters	Values	References
H0	73 ± 7	[9]
b h2	0.019 ± 0.002	our compilation
m	0.29 ± 0.06	our compilation
	0.71 ± 0.07	our compilation
0	1.0 +0.03-0.02	[43]
ns	1.02 ± 0.08	our compilation
w	< -0.86	our compilation
q0	-0.56 ± 0.04	our compilation