activity
20232026
most citedUsing non-DESI data to confirm and strengthen the DESI 2024 spatially-flat CDM cosmological parameterization result

107 citations · 206 across the 13 of their papers we have counts for

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Showing 2025Show all

5 papers · 1 filter

astro-ph.GA2025

Standardizing reverberation-mapped H active galactic nuclei using time-averaged radiusluminosity relations with 5100\,Å\,, broad H, and narrow \OIII\ luminosities

Shulei Cao, Amit Kumar Mandal, Michal Zajaček +1

Active galactic nuclei (AGN) have been studied as alternate probes in cosmology due to their large and stable luminosities and broad redshift range. Previously it was shown that hi…

astro-ph.CO2025★ 4 cited

Updated observational constraints on CDM dynamical dark energy cosmological models

Chan-Gyung Park, Bharat Ratra

We present updated observational constraints on the spatially flat CDM model, where dark energy is described by a minimally coupled scalar field with an inverse power-law po…

astro-ph.GA2025

Standardizing a larger, higher-quality, homogeneous sample of reverberation-mapped H active galactic nuclei using the broad-line region radius-luminosity relation

Shulei Cao, Amit Kumar Mandal, Michal Zajaček +1

We present a high-quality, homogeneous sample of 157 H reverberation-mapped active galactic nuclei (RM AGNs) spanning redshifts , which is approximat…

astro-ph.CO2025★ 4 cited

Testing the consistency of new Amati-correlated gamma-ray burst dataset cosmological constraints with those from better-established cosmological data

Shulei Cao, Bharat Ratra

Gamma-ray bursts (GRBs) are promising cosmological probes for exploring the Universe at intermediate redshifts (). We analyze 151 Fermi-observed long GRBs (datasets A123 and A28…

astro-ph.CO2025★ 8 cited

Is excess smoothing of Planck CMB ansiotropy data partially responsible for evidence for dark energy dynamics in other CDM parametrizations?

Chan-Gyung Park, Bharat Ratra

We study spatially-flat dynamical dark energy parametrizations, CDM, with redshift-dependent dark energy equation of state parameter expressed using three different qu…