Do reverberation-measured H$\beta$ quasars provide a useful test of cosmology?

Narayan Khadka, Mary Loli Martínez-Aldama, Michal Zajaček +2

We use 118 H$\beta$ quasar (QSO) observations in the redshift range $0.0023\le z\le 0.89$ to simultaneously constrain cosmological model parameters and QSO 2-parameter radius-lumin…