Thank you very much!
In the density equation of radiation,
{R^{3(1 + {w_{rad}})}}{u_{rad}} = {R^4}{u_{rad}} = {u_{rad,0}} = a{T_0}^4
It is estimated that R^3 was formed due to the volume of the universe increase, and that the rest R^1 was generated because of photon's cosmological redshift(by...
Hello,
I am sorry. I apologize for my poor English.
[ Implicit assumption of CMBR? ]
It is not certain whether this kind of experiment has already been conducted. Still, it need be tested whether the wavelength distribution of 3000k radiation cooling down to 2.7K is completely identical to...
Dear Kraflyn!
Thank you very much!
I’m sorry. I apologize for my poor English.
My question is not radiation’s temperature but matter’s(intergalactic medium’s) temperature.
How do derive it from thermal equilibrium state(3000K)?
Light’s temperature and particle’s temperature from 3000K
The universe is estimated to have been in the thermal equilibrium state(3000K) around 380,000 years after its birth.
From this, we induce the current temperature of CMB - 2.7K.
In case of particles existing outside(example. at...