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SUMMARY:Current data are consistent with flat spatial hypersurfaces in the
  LCDM but favor more lensing than the model predicts
DTSTART;VALUE=DATE-TIME:20230531T153500Z
DTEND;VALUE=DATE-TIME:20230531T160000Z
DTSTAMP;VALUE=DATE-TIME:20261017T061655Z
UID:indico-contribution-974@cern.ch
DESCRIPTION:Speakers: Javier DE CRUZ PÉREZ ()\nWe study the performance o
 f three pairs of tilted ΛCDM cosmological models\, two pairs allowing for
  non-flat spatial hypersurfaces with CMB temperature and polarization powe
 r spectrum data (P18) from Planck\, P18 lensing (lensing)\, and non-CMB da
 ta (non-CMB). For the six models\, we measure cosmological parameters and 
 study whether or not pairs of the data sets are mutually consistent in the
 se models. Half of these models allow the lensing consistency parameter AL
  to be an additional free parameter\, while the other three have AL=1. In 
 the tilted non-flat models with AL=1 we find differences between P18 data 
 and non-CMB data cosmological parameter constraints. While both P18 data a
 nd non-CMB data separately favor a closed geometry when P18+non-CMB data a
 re jointly analyzed the evidence in favor of non-flat hypersurfaces subsid
 es. Differences between P18 data and non-CMB data cosmological constraints
  subside when AL is allowed to vary. From the most restrictive P18+lensing
 +non-CMB data combination we get almost model- independent constraints and
  find that the AL>1 option is preferred over the Ωk<0 one\, with the AL 
 parameter\, for all models\, being larger than unity by ∼ 2.5σ. Accordi
 ng to the deviance information criterion\, in the P18+lensing+non-CMB anal
 ysis\, the varying AL option is on the verge of being strongly favored ove
 r the AL=1 one\, which could indicate a problem for the standard tilted fl
 at ΛCDM model\n\nhttps://indico.unina.it/event/70/contributions/974/
LOCATION:Lisbon
URL:https://indico.unina.it/event/70/contributions/974/
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