nLab
Hubble's law

Related concepts

• dark energy

• inhomogeneous cosmology

  KBC void

References

General

See also

• Wikipedia, Hubble’s law

Possible tension of model with observation

Possible tensions in the standard model of cosmology, regarding determination of the Hubble constant in the early and late universe, apparently observed by various groups, since the late 2010s:

review:

• L. Verde T. Treu, A.G. Riess, Tensions between the Early and the Late Universe (arXiv:1907.10625)

Indication that the tension is not in the data but in systematic errors:

• Freedman et al. The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch (arxiv:1907.05922)

Indication that the tension is not resolved by effects in inhomogeneous cosmology (such as the KBC void):

• Hao-Yi Wu, Dragan Huterer, Sample variance in the local measurements of the Hubble constant, Monthly Notices of the Royal Astronomical Society, Volume 471, Issue 4, November 2017, Pages 4946–4955 (arXiv:1706.09723)