Lens galaxies in the Illustris simulation: power-law models and the bias of the Hubble constant from time delays
Lens galaxies in the Illustris simulation: power-law models and the bias of the Hubble constant from time delays
A power-law density model, i.e., $\rho(r) \propto r^{-\gamma'}$ has been commonly employed in strong gravitational lensing studies, including the so-called time-delay technique used to infer the Hubble constant $H_0$. However, since the radial scale at which strong lensing features are formed corresponds to the transition from the dominance of baryonic …