Best cosmological model based on COBE and one year of WMAP observations
CMB temperature T = 2.725±0.002 K
dipole dT=3.346±0.017mK, galactic(l,b)=(263.85±0.1, 48.25±0.04)
v=370 km/s
Age of Universe t = 13.7±0.2 Gyr
Hubble constant Ho = 71+4-3 km/s/Mpc
Age at decoupling = 379+8-7 kyr -- z=1089±1
Age at reionizing 180 Myr (100 to 400Myr 95% confidence) -- first stars
density (omega) = 8 pi G / 3 HoČ
matter density = 0.27±0.04 Baryonic=0.044±0.04 other=0.023
Dark energy density = 0.73±0.04 (Lambda, vacuum energy, quintessence)
total density = 1.02±0.02
matter=radiation when z=3233±200
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light comoving luminosity
Z age time dist scale dist
[Gyr] [Gyr] [Mpc] [kpc/"] [Mpc]
0.0 13.665 0 0 --- 0
0.1 12.380 1.286 414 1.822 455
0.2 11.257 2.408 809 3.268 971
0.3 10.274 3.391 1185 4.421 1541 ^
0.4 9.409 4.256 1543 5.343 2160 |
0.5 8.647 5.019 1882 6.082 2823 |
0.6 7.972 5.694 2202 6.673 3524 accelerating
0.7 7.373 6.293 2505 7.144 4259 coasting
0.8 6.839 6.826 2791 7.518 5204 decelerating
0.9 6.362 7.303 3062 7.812 5817 |
1.0 5.935 7.731 3317 8.041 6634 |
1.1 5.550 8.115 3559 8.216 7473 V
1.2 5.203 8.462 3787 8.346 8332
1.3 4.890 8.776 4004 8.439 9208
1.4 4.605 9.061 4209 8.502 10101
1.5 4.345 9.320 4404 8.539 11009
1.6 4.109 9.557 4589 8.556 11930 ***
1.7 3.892 9.773 4765 8.555 12864
2.0 3.342 10.324 5244 8.475 15733
3 2.190 11.476 6461 7.831 25843
4 1.571 12.094 7305 7.083 36524
5 1.197 12.469 7932 6.409 47594
6.2 0.911 12.755 8507 5.728 61250 quasar
6.4 0.874 12.791 8589 5.627 63559 farther quasar 23Oct2002
10 0.482 13.183 9660 4.257 106256
100 .016771 13.649 12925 0.620 1305455
1000 .000436 13.665 13977 0.068 14E6
1089 .000378 13.665 13995 0.062 15.25E6
3233 56461y 13.665 14155 0.021 45.78E6
www.astro.ucla.edu/~wright/CosmoCalc.html
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WMAP (David T. Wilkinson) Microwave Anisotropy Probe (L2 1.5E6km beyond Earth)
--->Universe is FLAT and in a period of accelerating expansion
--->polarization of microwave background anisotropy (e scatter 200Myr ABB)
--->vacuum energy density (Lambda) = 0.73 +/-0.04