New evidence for dark matter

Abstract

We present a new universal relation, satisfied by matter distributions at all observed scales, and show its amazingly good and detailed agreement with the predictions of the most up-to-date pure dark matter simulations of structure formation in the Universe. This work extends the previous analysis [0904.4054; 0909.5203] to a larger range of masses, demonstrates a different scaling law, and compares it with numerical simulations. This behaviour seems to be insensitive to the complicated feedback of baryons on dark matter. Therefore, it potentially allows to compare theoretical predictions directly with observations, thus providing a new tool to constrain the properties of dark matter. Such a universal property, observed in structures of all sizes (from dwarf spheroidal galaxies to galaxy clusters), is difficult to explain without dark matter, thus providing new evidence for its existence.

20 pages, LaTeX

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Cited by in corpus (14)

• On the core-halo distribution of dark matter in galaxies
• Searching for decaying dark matter in deep XMM-Newton observation of the Draco dwarf spheroidal
• Newtonian acceleration scales in spiral galaxies
• Dark matter scaling relations in intermediate z haloes
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• Observational insights on the origin of giant low surface brightness galaxies
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• A tight scaling relation of dark matter in galaxy clusters
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• Dark and visible matter distribution in Coma cluster: theory vs observations
• Universal Basic Mass Density inside Dark Matter Halos