3 papers
astro-ph.CO2025
Outer regions of galaxy clusters as a new probe to test modifications to gravity
Minahil Adil Butt, Sandeep Haridasu, Antonaldo Diaferio +4
We apply the caustic technique to samples of galaxy clusters stacked in redshift space to estimate the gravitational potential in the cluster's outer region and test modifications…
gr-qc2024
A Relativistic Tensorial Model for Fractional Interaction between Dark Matter and Gravity
Francesco Benetti, Andrea Lapi, Samuele Silveravalle +5
In a series of recent papers it was shown that several aspects of Dark Matter (DM) phenomenology, such as the velocity profiles of individual dwarfs and spiral galaxies, the scalin…
astro-ph.CO2024
Modified gravity in galaxy clusters: Joint analysis of Hydrostatics and Caustics
Minahil Adil Butt, Sandeep Haridasu, Yacer Boumechta +4
We present a comprehensive joint analysis of two distinct methodologies for measuring the mass of galaxy clusters: hydrostatic measurements and caustic techniques. We show that by…