Ambiguities in gravitational lens models: impact on time delays of the source position transformation
Ambiguities in gravitational lens models: impact on time delays of the source position transformation
The central ambition of the modern time delay cosmography consists in determining the Hubble constant $H_0$ with a competitive precision. However, the tension with $H_0$ obtained from the Planck satellite for a spatially-flat $\Lambda$CDM cosmology suggests that systematic errors may have been underestimated. The most critical one probably comes from …