English

Friedmann-free limits on spatial curvature

Cosmology and Nongalactic Astrophysics 2015-05-28 v4 General Relativity and Quantum Cosmology

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.

Keywords

Cite

@article{arxiv.1106.3469,
  title  = {Friedmann-free limits on spatial curvature},
  author = {James Rich},
  journal= {arXiv preprint arXiv:1106.3469},
  year   = {2015}
}

Comments

2 pages, zero figures, accepted by A&A

R2 v1 2026-06-21T18:23:52.962Z