Center for Theoretical Physics of the Universe (CTPU-PTC)

Cosmography and flat LCDM tension from quasar at high redshift

Name: Cosmography and flat LCDM tension from quasar at high redshift
Start: 2019-12-24T15:00:00+09:00
End: 2019-12-24T16:00:00+09:00
Location: CTPU Seminar Room

by Dr Tao Yang (APCTP)

Tuesday 24 Dec 2019, 15:00 → 16:00 Asia/Seoul

CTPU Seminar Room

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

Description

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.