12 citations · 12 across the 2 of their papers we have counts for
7 papers
Anchoring the Universe with Characteristic Redshifts using Raychaudhuri Equation Informed Reconstruction Algorithm (REIRA)
Shibendu Gupta Choudhury, Purba Mukherjee, Anjan Ananda Sen
We study the robustness and physical implications of a set of characteristic redshifts that capture key features of the late-time Universe. Using both model-independent reconstruct…
New Expansion Rate Anomalies at Characteristic Redshifts Geometrically Determined using DESI-DR2 BAO and DES-SN5YR Observations
Purba Mukherjee, Anjan A Sen
We perform a model-independent reconstruction of the cosmic distances using the Multi-Task Gaussian Process (MTGP) framework as well as knot-based spline techniques with DESI-DR2 B…
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.…
A New Tension at Characteristic Redshift from DESI-DR1 BAO and DES-SN5YR Observations
Purba Mukherjee, Anjan A Sen
We perform a model-independent reconstruction of the angular diameter distance () using the Multi-Task Gaussian Process (MTGP) framework with DESI-DR1 BAO and DES-SN5YR data…
Towards a Composite Framework for Simultaneous Exploration of New Physics in Background and Perturbed Universe
Shibendu Gupta Choudhury, Purba Mukherjee, Anjan Ananda Sen
We investigate deviations from CDM by independently parameterizing modifications in the background evolution and the growth of structures. The background is characterized by two…
Model-Agnostic Cosmological Inference with SDSS-IV eBOSS: Simultaneous Probing for Background and Perturbed Universe
Purba Mukherjee, Anjan A. Sen
Here we explore certain subtle features imprinted in data from the completed Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) as a com…