Meta-cold dark matter (mCDM) is a form of cold dark matter proposed to solve the cuspy halo problem. It consists of particles "that emerge relatively late in cosmic time (z ≲ 1000) and are born non-relativistic from the decays of cold particles".
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This article is an automated import of the Wikipedia article "Meta-cold dark matter", available at https://en.wikipedia.org/wiki/Meta-cold_dark_matter . Text is licensed under CC BY-SA 4.0.