5 papers
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…
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…
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…
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…
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…