Evolution of the cosmic surfaces in a photon dominated universe (Ωr=1)

Proper (r) & comoving (R), Plot range: r|R=0…70, t|η=0…70, a=0…4.80726

If H=67.15 at a=1, the age of this universe at a=1 would be t=7.280657

The Hubbleradius rH & the Particlehorizon rP coincide and grow with 2c

Since η=RP/c∝a in this model, the R(a) and R(η) diagrams look the same

Static | Crunch | Rip | Radiation | Matter | Milne | Hyper | Λk | ΛCDM

   r(t)

↑ r(t) / ↓ r(a)

   r(a)

↓ r(a) / ↓ R(t)

   R(t)

↑ R(t) / ↓ R(a)

   R(a)

↑ R(a) / ↓ R(η)

   R(η)

↑ R(η) / ↓ f(t)

   f(t)

Static | Crunch | Rip | Radiation | Matter | Milne | Hyper | Λk | ΛCDM

Main |  Code | Info | a, ȧ, ä, ã, â, H, Ḣ, Ḧ, rH, rE, rP, rL, Σr, Ω