All Questions
3 questions with no upvoted or accepted answers
2
votes
0
answers
119
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Formula to get scales of the two components (radial and perpendicular) of Baryonic Acoustic Oscillations (BAO)
In an astrophysics context about BAO (Baryonic Acoustic Oscillation), it is written on the following paper BAO paper :
"BAO are much smaller in amplitude than the CMB acoustic peaks, and are ...
user87745
1
vote
0
answers
50
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Present value of the cosmological scale factor, important or arbitrary?
I'm now confused about a subject that I thought was very clear to me, until recently. So I need to sort this clearly once and for all. Consider the standard FLRW cosmology in classical general ...
- 7,677
0
votes
1
answer
65
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Cosmological densities when universe was/will be a different size
Supposing a spatially flat, matter-dominated universe, the expression for the Hubble parameter is:
$$ H^{2}=H_{0}^{2}\left(\frac{\Omega_{m}}{a^{3}}+\Omega_{\Lambda}\right) $$
The previous equation ...
- 105