English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A suggested solution to the dark energy problem is the void model, whereaccelerated expansion is replaced by Hubble-scale inhomogeneity. In thesemodels, density perturbations grow on a radially inhomogeneous background. Thislarge scale inhomogeneity distorts the spherical Baryon Acoustic Oscillationfeature into an ellipsoid which implies that the bump in the galaxy correlationfunction occurs at different scales in the radial and transverse correlationfunctions. We compute these for the first time, under the approximation thatcurvature gradients do not couple the scalar modes to vector and tensor modes.The radial and transverse correlation functions are very different from thoseof the concordance model, even when the models have the same average BAO scale.This implies that if void models are fine-tuned to satisfy average BAO data,there is enough extra information in the correlation functions to distinguish avoid model from the concordance model. We expect these new features to remainwhen the full perturbation equations are solved, which means that the radialand transverse galaxy correlation functions can be used as a powerful test ofthe Copernican Principle.

Galaxy correlations and the BAO in a void universe: structure formation as a test of the Copernican Principle