Retrieving "Recombination" from the archives

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1. Cold Dark Matter (cdm)

   Linked via "recombination"

   Cosmic Microwave Background (CMB) Anisotropies
   Analysis of the power spectrum of the CMB) provides precise constraints on the density ratio of CDM) to baryonic matter ($\Omega{\text{CDM}} / \Omega{\text{baryon}} \approx 5.3$). The height of the first acoustic peak in the power spectrum is strongly sensitive to the total density of matter, while the relative heights of the odd and even peaks are sensitive to the ratio of baryonic to non-[baryonic matter]…

2. Dark Matter

   Linked via "recombination era"

   Cosmological Implications and Structure Formation
   In the standard cosmological model ($\Lambda$CDM), dark matter plays the crucial role of providing the gravitational seeds necessary for structure formation following the recombination era. Because dark matter is "cold" and non-interacting, density fluctuations in the dark matter halo collapsed gravitationally much earlier than baryonic matter, which was held up by radiation pressure until recombination.
   The growth of structure—from microscopic fluct…