Center for Theoretical Physics of the Universe (CTPU)

Cosmography and flat LCDM tension from quasar at high redshift

by Dr Tao Yang (APCTP)

CTPU Seminar Room

CTPU Seminar Room

Fourth floor IBS Building, 55, Expo-ro, Yuseong-gu, Daejeon, Korea, 34126

Recent studies indicate a more than 4 sigma deviation from the LCDM model through a model-independent parametrization of a Hubble Diagram of supernovae, quasar and gamma ray burst. In this talk, after introducing the basis of the cosmography, I will look into this tension deeply and show our reanalysis results. Some issues will be discussed. In addition, other model-independent method such as Gaussian process and its applications on gravitational waves cosmology will also be mentioned.