4 citations · 17 across the 16 of their papers we have counts for
8 papers · 1 filter
A test of Amati relation using HII galaxy distances
Rikiya Okazaki, Shantanu Desai
We use model-independent luminosity distances of 186 HII galaxy observations to address the circularity problem in the Amati relation for Gamma-ray Bursts (GRBs). For this purpose,…
A test of invariance of halo surface density for FIRE-2 simulations with cold dark matter and self-interacting dark matter
Sujit K. Dalui, Shantanu Desai
Numerous observations have shown that the dark matter halo surface density, defined as the product of core radius and halo central density of cored dark matter haloes is nearly con…
Testing the cosmic distance duality relation using model-independent approach
Shubham Barua, Sujit K. Dalui, Rikiya Okazaki +1
In this work, we test the cosmic distance duality relation (CDDR) using the arbitrary redshift pivot Padé-(2,1) expansion methodology developed in arXiv:2509.16196. This approach a…
Cosmological Constraints on Neutrino Masses in a Second-Order CPL Dark Energy Model
Shubham Barua, Shantanu Desai
Recent DESI results indicate a strong preference for dynamical dark energy (DE) when baryon acoustic oscillation (BAO) measurements are combined with supernovae (SNe) and cosmic mi…
On frequentist confidence intervals in a non-Gaussian regime
Shubham Barua, Shantanu Desai, Mauricio Lopez-Hernandez +1
We study frequentist confidence intervals based on graphical profile likelihoods (Wilks' theorem, likelihood integration), and the Feldman-Cousins (FC) prescription, a generalisati…
Search for Lorentz Invariance Violation with spectral lags of GRB 190114C using profile likelihood
Vyaas Ramakrishnan, Shantanu Desai
We search for Lorentz invariance violation (LIV) by re-analyzing the spectral lag data for GRB 190114C from Fermi-GBM using frequentist analysis, where we deal with the astrophysic…
Determination of Hubble constant from Megamaser Cosmology Project using Profile Likelihood
Shubham Barua, Vyaas Ramakrishnan, Shantanu Desai
The Megamaser Cosmology Project inferred a value for the Hubble constant given by km/sec/Mpc. This value was obtained using Bayesian inference by marginalizing…
Constraints on Lorentz Invariance Violation from Gamma-ray Burst rest-frame spectral lags using Profile Likelihood
Vyaas Ramakrishnan, Shantanu Desai
We reanalyze the spectral lag data for 56 Gamma-Ray Bursts (GRBs) in the cosmological rest frame to search for Lorentz Invariance Violation (LIV) using frequentist inference. For t…