Baryon Acoustic Oscillations ·
A Cosmic Ruler Frozen in Galaxies
un
seel
.com · sound waves · 150 Mpc · cosmic ruler
Epoch
plasma
Shell radius
0 Mpc
Phase
—
Overdensity (seed)
Photon pressure wave
Baryon (matter) shell
Galaxies (today)
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.com · Baryon Acoustic Oscillations