299 citations · 341 across the 12 of their papers we have counts for
5 papers · 1 filter
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…
The shape of the Chameleon fifth-force on the mass components of galaxy clusters
Lorenzo Pizzuti, Valentina Amatori, Alexandre M. Pombo +1
In the context of Chameleon gravity, we present a semi-analytical solution of the chameleon field profile in accurately modelled galaxy cluster's mass components, namely: the stell…
Inferring dark energy properties from the scale factor parametrisation
Upala Mukhopadhyay, Sandeep Haridasu, Anjan A Sen +1
We propose and implement a novel test to assess deviations from well-established concordance CDM cosmology while inferring dark energy properties. In contrast to the commonly im…
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…
Holographic and Gravity-Thermodynamic Approaches in Entropic Cosmology: Bayesian Assessment using late-time Data
Udit K. Tyagi, Sandeep Haridasu, Soumen Basak
We investigate the cosmological implications of entropy-based approaches in the context of Holographic Dark Energy (HDE) and Gravity-Thermodynamics (GT) formalisms. We utilise the…