Recognition: unknown
Friedmann-free limits on spatial curvature
classification
🌌 astro-ph.CO
gr-qc
keywords
curvaturelimitsspatialcosmologicalderiveddiscussdistanceequation
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We discuss limits on cosmological spatial curvature that can be derived without imposing the geometry-density relation required by the Friedmann equation. In particular, studies of the expansion history using stellar evolution in passive galaxies imply a curvature radius greater than the Hubble distance.
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