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Paper detail

Turnaround physics beyond spherical symmetry

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.

preprint2021arXivOpen access
Andrea GiustiValerio Faraoni
astro-ph.COgr-qc
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Andrea GiustiValerio Faraoni

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