Cold dark matter is nonrelativistic early enough that its primordial free-streaming length is small compared with the cosmological structures of interest.
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- Adiabatic radiation-era cold-dark-matter transfer solution
- CDM density equation in a matter-radiation universe
- Cold-dark-matter kinetic Jeans scale
- Cosmological entropy perturbation
- Cosmological structure formation
- Galactic angular-momentum catastrophe
- George R. Blumenthal
- Hot dark matter
- Jeans support versus forced baryon response
- Joel Primack
- Lambda-CDM model
- Matter-era forced radiation response
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- P. de Bernardis
- Sandra Faber
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Cold dark matter (CDM) is a theoretical form of matter that makes up a significant portion of the total mass-energy content of the universe. It is a critical component in the standard model of cosmology, particularly in the context of the Big Bang theory and structure formation. Here are some key points about cold dark matter: 1. **Nature**: CDM is "cold" in the sense that it moves slowly compared to the speed of light and has low thermal velocities.