6 papers
Beyond ÎCDM with the SKA Observatory -- I: Probing Gravity on Cosmological Scales
S. Camera, C. Addis, S. L. Guedezounme +26
General relativity (GR) is currently the best description of the gravitational interaction at our disposal and is one of the foundations of the concordance cosmological model. For…
Testing the equivalence principle across the Universe: a model-independent approach with galaxy multi-tracing
Sveva Castello, Ziyang Zheng, Camille Bonvin +1
We present a test of the equivalence principle on cosmological scales. This cornerstone of general relativity has been tested with high precision for standard matter, but its valid…
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…
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…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Disentangling modified gravity from a dark force with gravitational redshift
Sveva Castello, Zhuangfei Wang, Lawrence Dam +2
The standard approach to test for deviations from general relativity on cosmological scales is to combine measurements of the growth rate of structure with gravitational lensing. I…