Search results for "Spatial curvature"

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The galaxy power spectrum take on spatial curvature and cosmic concordance

2020

The concordance of the $\Lambda$CDM cosmological model in light of current observations has been the subject of an intense debate in recent months. The 2018 Planck Cosmic Microwave Background (CMB) temperature anisotropy power spectrum measurements appear at face value to favour a spatially closed Universe with curvature parameter $\Omega_K<0$. This preference disappears if Baryon Acoustic Oscillation (BAO) measurements are combined with Planck data to break the geometrical degeneracy, although the reliability of this combination has been questioned due to the strong tension present between the two datasets when assuming a curved Universe. Here, we approach this issue from yet another point…

Planckcosmological modelCosmology and Nongalactic Astrophysics (astro-ph.CO)media_common.quotation_subjectCosmological parametersSpatial curvatureDark matterCosmic microwave backgroundCosmic background radiationFOS: Physical sciencesanisotropycosmic background radiationAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsGeneral Relativity and Quantum Cosmology (gr-qc)power spectrumCurvature01 natural sciencesGeneral Relativity and Quantum Cosmologydark matterCosmologyacousticsymbols.namesake0103 physical sciencesPlanck010303 astronomy & astrophysicsmedia_commonPhysics[PHYS.GRQC] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]010308 nuclear & particles physicstemperatureAstronomy and AstrophysicsoscillationtensionUniverseGalaxybaryonCosmological tensionsSpace and Planetary Sciencecurvature[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]symbolsgalaxy[PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph][PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]Astrophysics - Cosmology and Nongalactic AstrophysicsPhysics of the Dark Universe
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