radiation-dominated Universe گیتی ِ تابشچیره giti-ye tâbeš-ciré
*Fr.: Univers dominé par le rayonnement*
An early epoch in the history of the → *Universe* when the
radiation → *density parameter* was Ω_{r}≈ 1,
while other density parameters had negligible contributions. A
radiation-dominated Universe is characterized by
*R*/*R*_{0} ∝ *t*^{1/2}, where
*R* is the → *cosmic scale factor* and *t* is time.
According to the → *Big Bang* model, the radiation-dominated phase
was followed by the → *matter-dominated* phase. → *radiation*; → *dominate*;
→ *Universe*. |