107 citations · 206 across the 13 of their papers we have counts for
6 papers · 1 filter
Standardizing reverberation-mapped H and H active galactic nuclei using radius--luminosity relations involving monochromatic and broad H luminosities
Shulei Cao, Amit Kumar Mandal, Michal Zajaček +2
We test the standardizability of a homogeneous sample of 41 lower-redshift () active galactic nuclei (AGNs) reverberation-mapped (RM) using the broad H…
Is the CDM cosmological parameterization evidence for dark energy dynamics partially caused by the excess smoothing of Planck CMB anisotropy data?
Chan-Gyung Park, Javier de Cruz Perez, Bharat Ratra
We study the performance of the spatially-flat dynamical dark energy (DE) CDM parameterization, with redshift-dependent DE fluid equation of state parameter $w(z) = w_0 + w…
Using non-DESI data to confirm and strengthen the DESI 2024 spatially-flat CDM cosmological parameterization result
Chan-Gyung Park, Javier de Cruz Perez, Bharat Ratra
We use a combination of Planck cosmic microwave background (CMB) anisotropy data and non-CMB data that include Pantheon+ type Ia supernovae (SNIa), Hubble parameter [], growt…
Updated observational constraints on spatially-flat and non-flat CDM and XCDM cosmological models
Javier de Cruz Perez, Chan-Gyung Park, Bharat Ratra
We study 6 LCDM models, with 4 allowing for non-flat geometry and 3 allowing for a non-unity lensing consistency parameter . We also study 6 XCDM models with a dynamical dark…
Testing the standardizability of, and deriving cosmological constraints from, a new Amati-correlated gamma-ray burst data compilation
Shulei Cao, Bharat Ratra
By using gamma-ray burst (GRB) data to simultaneously constrain Amati correlation parameters and cosmological parameters in six spatially-flat and nonflat dark energy cosmological…
Effects of type Ia supernovae absolute magnitude priors on the Hubble constant value
Yun Chen, Suresh Kumar, Bharat Ratra +1
We systematically explore the influence of the prior of the peak absolute magnitude () of type Ia supernovae (SNe Ia) on the measurement of the Hubble constant () from SNe…