Turnaround physics beyond spherical symmetry

Abstract

The concept of turnaround surface in an accelerating universe is generalized to arbitrarily large deviations from spherical symmetry, to close the gap between the idealized theoretical literature and the real world observed by astronomers. As an analytical application, the characterization of turnaround surface is applied to small deviations from spherical symmetry, recovering a previous result while extending it to scalar-tensor gravity.

arXiv comment15 pages, no figures, updated to match the published version

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Cited by in corpus (4)

• Galaxy groups in the presence of Cosmological Constant: Increasing the Masses of Groups
• Structure formation and quasi-spherical collapse from initial curvature perturbations with numerical relativity simulations
• The maximum turnaround radius for axisymmetric cosmic structures
• On the maximum volume of collapsing structures