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Ned Wright's Calculator?: Co Moving R(t) for Entire (13.721 Gyr) Universe??
Hopefully I use the correct terms in my description.....question:
1) Do the values I obtained (at bottom) for Radius of universe vs age of universe look about right? It appears that after inflation, the universe has only about doubled in size, if so. 2) If I understand right, by using Omega_M + Omega_vac = 1.0, I have picked a flat universe. What values could I plug in and try so that the co moving radii reported by the calculator reflect a current best guess for a Dark Energy inflated universe? Thanks, rt Clearly, when the universe was only 0.721 Gyr old, we could not see (from earth, if we were here back then) objects that were 13 GLyr distant as light had only been travelling for 0.721 Gyr. But the objects we observe today, were still out there, beyond the veil of the CBR, when the universe was 0.721 Gyr old..............same goes today....there are (most likely) galaxies out at 15 GLyr distance but we won't see them for another couple Gyr. So.........I should be able to determine the co moving radius of the universe as a function of age of the universe, from early to present, using all objects we can observe today. Values I got from Ned Wright's Astrophysics Cosmological Calculator H_0=69.6 Light Omega_M= 0.286 Universe Travel Omega_vac= 0.714 Distance Age @z Time General Button z Gyr Gyr Age Today = 13.721 Gyrs 0.075 12.721 1 z=3 0.15885 11.721 2 Age at z=2.171 Gyr 0.2534 10.721 3 Light travel time=11.549 Gyr 0.3616 9.721 4 0.4873 8.721 5 0.6363 7.721 6 0.8178 6.721 7 1.0462 5.721 8 1.3474 4.721 9 1.7715 3.721 10 =20 2.434 2.721 11 3.677 1.721 12 7.368 0.721 13 Result: Co Moving Radius for the Entire (observable today) Universe Gly 14.21 at age = 0.721 Gyr 14.77 = 1.721 15.36 = 2.721 16.00 = ... 16.70 17.49 18.37 19.38 20.56 22.00 23.83 26.39 30.79 = 13.721 Gyr |
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