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- W3100858613 abstract "Structure formation creates high temperature and density regions in the Universe that allow the conversion of matter into more stable states, with a corresponding emission of relativistic matter and radiation. An example of such a mechanism is the supernova event, that releases relativistic neutrinos corresponding to 99% of the binding energy of remnant neutron star. We take this phenomena as a starting point for an assumption that similar processes could occur in the dark sector, where structure formation would generate a late time conversion of cold dark matter into a relativistic form of dark matter. We performed a phenomenological study about the limits of this conversion, where we assumed a transition profile that is a generalized version of the neutrino production in supernovae events. With this assumption, we obtained an interesting modification for the constraint over the cold dark matter density. We show that when comparing with the standard Lambda CDM cosmology, there is no preference for conversion, although the best fit is within 1sigma from the standard model best fit. The methodology and the results obtained qualify this conversion hypothesis, from the large scale structure point of view, as a viable and interesting model to be tested in the future with small scale data, and mitigate discrepancies between observations at this scale and the pure cold dark matter model." @default.
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- W3100858613 date "2013-06-06" @default.
- W3100858613 modified "2023-09-26" @default.
- W3100858613 title "Limits in late time conversion of cold dark matter into dark radiation" @default.
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- W3100858613 doi "https://doi.org/10.1088/1475-7516/2013/06/006" @default.
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