Photon-baryon fluid
= Photon-baryon fluid
{wiki=Baryon_acoustic_oscillations}
Before recombination, frequent Thomson scattering couples photons, electrons, and baryons into an acoustic fluid.
= Photon-baryon fluid
{wiki=Baryon_acoustic_oscillations}
Before recombination, frequent Thomson scattering couples photons, electrons, and baryons into an acoustic fluid.