Warm dark matter versus bumpy power spectra
نویسندگان
چکیده
منابع مشابه
Bumpy Power Spectra and ∆T/T
With the recent publication of the measurements of the radiation angular power spectrum from the BOOMERanG Antarctic flight (de Bernardis et al. 2000), it has become apparent that the currently favoured spatially–flat cold dark matter model (matter density parameter Ωm = 0.3, flatness being restored by a cosmological constant ΩΛ = 0.7, Hubble parameter h = 0.65, baryon density parameter Ωbh 2 =...
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Cold Dark Matter (CDM) models of galaxy formation had been remarkably successful to explain a number of observations in the past decade. However, with both the theoretical modeling and the observations being improved, CDM models have been very recently shown to have excessive clustering on the sub-galactic scale. Here I discuss a solution, based on our high-resolution numerical simulations, to ...
متن کاملDecaying warm dark matter and neutrino masses.
Neutrino masses may arise from spontaneous breaking of ungauged lepton number. Because of quantum gravity effects the associated Goldstone boson - the majoron - will pick up a mass. We determine the lifetime and mass required by cosmic microwave background observations so that the massive majoron provides the observed dark matter of the Universe. The majoron decaying dark matter scenario fits n...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2003
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2003.06437.x