Friedmann-free limits on spatial curvature
arXiv:1106.3469 · doi:10.1051/0004-6361/201117559
Abstract
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.
2 pages, zero figures, accepted by A&A