Exploring Fascinating Topics in Astrophysics
Delve into intriguing subjects like Galactic Rotation Curves, Mass to Luminosity Ratio, Low Surface Brightness Galaxies, Dark Matter Haloes, and the Bullet Cluster. Discover how observations and Big Bang nucleosynthesis help us understand dark matter in the universe.
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Dark matter haloes The abundance of He-4 is independent of density. Yet the other products of Big bang nucleosynthesis do depend on density. The range allowed by the observations (grey line). Rules out a substantial amount of baryonic dark matter.
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