%0 Generic %1 efstathiou2020evidence %A Efstathiou, George %A Gratton, Steven %D 2020 %K library %T The evidence for a spatially flat Universe %U http://arxiv.org/abs/2002.06892 %X We revisit the observational constraints on spatial curvature following recent claims that the Planck data favour a closed Universe. We use a new and statistically powerful Planck likelihood to show that the Planck temperature and polarization spectra are consistent with a spatially flat Universe, though because of a geometrical degeneracy cosmic microwave background spectra on their own do not lead to tight constraints on the curvature density parameter Omega_K. When combined with other astrophysical data, particularly geometrical measurements of baryon acoustic oscillations, the Universe is constrained to be spatially flat to extremely high precision, with Omega_ K = 0.0004 +/-0.0018 in agreement with the 2018 results of the Planck team. In the context of inflationary cosmology, the observations offer strong support for models of inflation with a large number of e-foldings and disfavour models of incomplete inflation.

@misc{efstathiou2020evidence, abstract = {We revisit the observational constraints on spatial curvature following recent claims that the Planck data favour a closed Universe. We use a new and statistically powerful Planck likelihood to show that the Planck temperature and polarization spectra are consistent with a spatially flat Universe, though because of a geometrical degeneracy cosmic microwave background spectra on their own do not lead to tight constraints on the curvature density parameter Omega_K. When combined with other astrophysical data, particularly geometrical measurements of baryon acoustic oscillations, the Universe is constrained to be spatially flat to extremely high precision, with Omega_ K = 0.0004 +/-0.0018 in agreement with the 2018 results of the Planck team. In the context of inflationary cosmology, the observations offer strong support for models of inflation with a large number of e-foldings and disfavour models of incomplete inflation.}, added-at = {2020-02-18T13:35:40.000+0100}, author = {Efstathiou, George and Gratton, Steven}, biburl = {https://www.bibsonomy.org/bibtex/23a914d68b593a4d21e672d9057686db1/gpkulkarni}, description = {The evidence for a spatially flat Universe}, interhash = {36cdd85857745ca66c99146b3ad234f2}, intrahash = {3a914d68b593a4d21e672d9057686db1}, keywords = {library}, note = {cite arxiv:2002.06892Comment: submitted to MNRAS}, timestamp = {2020-02-18T13:35:40.000+0100}, title = {The evidence for a spatially flat Universe}, url = {http://arxiv.org/abs/2002.06892}, year = 2020 }