Thomas de Jaeger

The most stringent local measurement of the Hubble constant from Cepheid-calibrated Type Ia supernovae differs from the value inferred via the cosmic microwave background radiation (Planck + LCDM) by more than five sigmas. This so-called “Hubble tension” has been confirmed by other independent methods and thus does not appear to be a possible consequence of systematic errors. In this talk, I will describe an independent approach to test the second and third rungs of the distance-ladder method using Type II supernovae. Finally, I will also present a method that does not require any external calibration and can be used to directly measure H0.