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astro-ph.CO2026
Testing the Equivalence Principle in Galaxy Clusters
Enea Di Dio, Sveva Castello, Camille Bonvin
Clusters of galaxies have been used to measure a subtle effect predicted by Einstein: gravitational redshift. This signal encodes pristine information about our Universe, since it…
astro-ph.CO2025
Gravitational Redshift from Galaxy Clusters -- a Relativistic Approach
Enea Di Dio, Sveva Castello, Camille Bonvin
The light that we receive from clusters of galaxies is redshifted by the presence of the clusters' gravitational potential. This effect, known as gravitational redshift, was first…
astro-ph.CO2025
Detecting rotation from lensing in the CMB
Julien Carron, Enea di Dio, Ruth Durrer
An excellent estimate of the lensing signal is expected from the availability of deep and high-resolution polarization data in the near future. This is most important to allow for…