Is Hubble constant is constant?
演讲者
Eoin Ó Colgáin
时间
2022年03月17日 10:00 至 11:00
地点
1131
线上
Zoom 849 963 1368
(YMSC)
摘要
Modern cosmology rests upon the Cosmological Principle or FLRW paradigm, namely the assumption that the Universe is isotropic and homogeneous at large scales. Working within these assumptions, we are witnessing a potential 5 sigma discrepancy in the Hubble constant H0 between early and late Universe determinations. I will explain how this discrepancy may be an artifact of a breakdown of FLRW at large scales. If true, we're looking at paradigm shift in cosmology.