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Cosmology

The matter with density

Theories of how the Universe developed structure assume a similar distribution of matter in small and large structures. But observations of gas densities in galaxy clusters suggest that this is not the case.

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Figure 1: Hot gas in galaxy groups.

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Correspondence to Trevor Ponman.

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Ponman, T. The matter with density. Nature 414, 402–403 (2001). https://doi.org/10.1038/35106669

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