540 citations · 4k across the 92 of their papers we have counts for
93 papers
Disentangling the growth rate of perturbations from the HI bias using only clustering data from galaxy surveys
Pankaj Chavan, Tapomoy Guha Sarkar, Anjan A Sen
This work serves two-fold purpose. Firstly, we provide an alternative to the traditional method of determining the growth rate of density perturbations . In usual practice, $…
The dynamics of background evolution and structure formation in phase space: a semi-cosmographic reconstruction
Pankaj Chavan, Tapomoy Guha Sarkar, Anjan A Sen
The Baryon Acoustic Oscillation (BAO) feature, imprinted in the transverse and radial clustering of dark matter tracers, enables the simultaneous measurement of the angular diamete…
Pressure Parametrization of Dark Energy: First and Second-Order Constraints with Latest Cosmological Data
Hanyu Cheng, Eleonora Di Valentino, Luis A. Escamilla +2
We explore an extension of the CDM model in which the pressure of the dark energy (DE) fluid evolves with the expansion of the Universe, expressed as a function of the scale…
Updated Constraints on Omnipotent Dark Energy: A Comprehensive Analysis with CMB and BAO Data
Enrico Specogna, Shahnawaz A. Adil, Emre Ozulker +4
In this work, we present updated observational constraints on the parameter space of the DMS20 dark energy model, a member of the omnipotent dark energy (ODE) class. Our analysis c…
A semi-cosmographic approach to study cosmological evolution in phase space
Pankaj Chavan, Tapomoy Guha Sarkar, Chandrachud B. V. Dash +1
The signature of Baryon Acoustic Oscillation in the clustering of dark-matter tracers allows us to measure independently. Treating these as conjugate variables, we…
The Excess of JWST Bright Galaxies: a Possible Origin in the Ground State of Dynamical Dark Energy in the light of DESI 2024 Data
Nicola Menci, Anjan Ananda Sen, Marco Castellano
Recent observations by JWST yield a large abundance of luminous galaxies at compared to that expected in the CDM scenario based on extrapolations of the star formatio…