Estimator for the anisotropic stress using relativistic effects in Large-Scale Structure

Daniel Sobral-Blanco

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arXiv · 2203.08761

Estimator for the anisotropic stress using relativistic effects in Large-Scale Structure

Daniel Sobral-Blanco

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Abstract

The large-scale structure of the Universe is a rich source of information to test the consistency of General Relativity on cosmological scales. We briefly describe how the observed distributions of galaxies is affected by redshift-space distortions, but also by gravitational lensing and other relativistic effects. Then, we show how one of this relativistic effects, the gravitational redshift, can be used to build a model independent test that directly measures the anisotropic stress, i.e. the difference between the two gravitational potentials that describe spacetime fluctuations of the geometry.

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Daniel Sobral-Blanco. 2022-03-16. Estimator for the anisotropic stress using relativistic effects in Large-Scale Structure. https://arxiv.org/abs/2203.08761

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