299 citations · 341 across the 12 of their papers we have counts for
6 papers · 1 filter
Dynamical Dark Energy or Modified Gravity? Signatures in Gravitational Wave Propagation
Purnendu Karmakar, Sandeep Haridasu
We discuss the implications of the most recent DESI Baryon Acoustic Oscillations (BAO) DR2 and DESyr5 compilation of supernovae (SNe) datasets for modified gravity focusing on non-…
Constraints on Logarithmic Model Extensions of Symmetric Teleparallel Gravity
Purnendu Karmakar, Sandeep Haridasu, Atsushi Nishizawa
We address various cosmological phenomenologies in the symmetric teleparallel framework both in background and perturbation such as cosmic expansion, gravitational coupling constan…
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…
Constraints on Generalized Gravity-Thermodynamic Cosmology from DESI DR2
Udit K. Tyagi, Sandeep Haridasu, Soumen Basak
We explore the cosmological implications of generalized entropic models within the framework of Gravity-Thermodynamics (GT) approaches. These models, characterized by three or four…
Unveiling the Coma Cluster Structure: From the Core to the Hubble Flow
David Benisty, Jenny Wagner, Sandeep Haridasu +1
The Coma cluster, embedded in a cosmic filament, is a complex and dynamically active structure in the local Universe. Applying a density-based member selection dbscan to data from…
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.…