activity
20232025
most citedConstraining Chameleon screening using galaxy cluster dynamics

12 citations · 22 across the 7 of their papers we have counts for

collaborators

7 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★ 1 cited

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…

astro-ph.CO2024★ 6 cited

Mass Modeling and Kinematics of Galaxy Clusters in Modified Gravity

Lorenzo Pizzuti, Yacer Boumechta, Sandeep Haridasu +6

The chameleon screening mechanism has been constrained many a time using dynamic and kinematic galaxy cluster observables. Current constraints are, however, insensitive to differen…

astro-ph.CO2024★ 3 cited

Caustic and hydrostatic mass bias: Implications for modified gravity

Minahil Adil Butt, Balakrishna S. Haridasu, Yacer Boumechta +4

We propose and perform a joint analysis of the two different mass estimates of galaxy clusters, namely the hydrostatic and caustic techniques. Firstly, we show comprehensively that…

astro-ph.CO2023

Dark Matter in Fractional Gravity III: Dwarf Galaxies Kinematics

F. Benetti, A. Lapi, G. Gandolfi +4

Recently we put forward a framework where the dark matter (DM) component within virialized halos is subject to a non-local interaction originated by fractional gravity (FG) effects…

astro-ph.CO2023★ 12 cited

Constraining Chameleon screening using galaxy cluster dynamics

Yacer Boumechta, Balakrishna S. Haridasu, Lorenzo Pizzuti +3

We constrain the Chameleon \textit{screening} mechanism in galaxy clusters, essentially obtaining limits on the coupling strength and the asymptotic value of the field $ϕ_{\inf…