Open and closed CDM isocurvature models contrasted with the CMB data

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dc.creatorEnqvist, Kari
dc.creatorKurki-Suonio, Hannu
dc.creatorValiviita, Jussi
dc.date2001-08-27
dc.date2001-12-07
dc.date.accessioned2026-07-07T11:45:58Z
dc.date.available2026-07-07T11:45:58Z
dc.descriptionWe consider pure isocurvature cold dark matter models in the case of open and closed universe. We allow for a large spectral tilt and scan the 6-dimensional parameter space for the best fit to the COBE, Boomerang, and Maxima-1 data. Taking into account constraints from large-scale structure and big bang nucleosynthesis, we find a best fit with $χ^2 = 121$, which is to be compared to $χ^2 = 44$ of a flat adiabatic reference model. Hence the current data strongly disfavour pure isocurvature perturbations.
dc.description6 pages, 6 figures. V2: Added a discussion of the effect of curvature scale on the primordial power spectrum and made minor changes to match better the Phys. Rev. D 65, 0230XX (2002)
dc.identifierhttps://arxiv.org/abs/astro-ph/0108422
dc.identifierhttp://arxiv.org/abs/astro-ph/0108422
dc.identifierPhys.Rev.D65:043002,2002
dc.identifierdoi:10.1103/PhysRevD.65.043002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202065
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOpen and closed CDM isocurvature models contrasted with the CMB data
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