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arxiv: 1106.3469 · v4 · submitted 2011-06-17 · 🌌 astro-ph.CO · gr-qc

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Friedmann-free limits on spatial curvature

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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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