# The value of $H_0$ in the inhomogeneous Universe

Ben-Dayan I, Durrer R, Marozzi G, Schwarz D (2014)
Phys. Rev. Lett. 112(22).

Journal Article | Published | English

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Abstract
Local measurements of the Hubble expansion rate are affected by structureslike galaxy clusters or voids. Here we present a first fully relativistictreatment of this effect, studying how clustering modifies the mean distance(modulus)-redshift relation and its dispersion. The best estimates of the localexpansion rate stem from supernova observations at small redshifts (0.01 < z < 0.1). It is interesting to compare these local measurements with globalfits to data from cosmic microwave background anisotropies. In particular, weargue that cosmic variance (i.e. the effects of the local structure) is of thesame order of magnitude as the current observational errors and must be takeninto account in all future local measurements of the Hubble expansion rate.
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Ben-Dayan I, Durrer R, Marozzi G, Schwarz D. The value of $H_0$ in the inhomogeneous Universe. Phys. Rev. Lett. 2014;112(22).
Ben-Dayan, I., Durrer, R., Marozzi, G., & Schwarz, D. (2014). The value of $H_0$ in the inhomogeneous Universe. Phys. Rev. Lett., 112(22).
Ben-Dayan, I., Durrer, R., Marozzi, G., and Schwarz, D. (2014). The value of $H_0$ in the inhomogeneous Universe. Phys. Rev. Lett. 112.
Ben-Dayan, I., et al., 2014. The value of $H_0$ in the inhomogeneous Universe. Phys. Rev. Lett., 112(22).
I. Ben-Dayan, et al., “The value of $H_0$ in the inhomogeneous Universe”, Phys. Rev. Lett., vol. 112, 2014.
Ben-Dayan, I., Durrer, R., Marozzi, G., Schwarz, D.: The value of $H_0$ in the inhomogeneous Universe. Phys. Rev. Lett. 112, (2014).
Ben-Dayan, Ido, Durrer, Ruth, Marozzi, Giovanni, and Schwarz, Dominik. “The value of $H_0$ in the inhomogeneous Universe”. Phys. Rev. Lett. 112.22 (2014).
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PMID: 24949753
PubMed | Europe PMC

arXiv 1401.7973

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