Abstract Details

Name: Shashikant Gupta
Affiliation: GD Goenka University, Gurugram, PIN 122103
Conference ID: ASI2021_135
Title : Does Hubble Tension Really Exist?
Authors and Co-Authors : Rahul Kumar Thakur1, Shashikant Gupta∗2, Rahul Nigam1, andP.K Thiruvikraman 11BITS-Pilani, Hyderabad Campus, 2GD Goenka University, Gurugram
Abstract Type : Poster
Abstract Category : General Relativity and Cosmology
Abstract : The Hubble constant ($H_0$) is one of the most important cosmological parameters as it represents the expansion rate and sets the age of the Universe. The recent measurements of $H_0$ using the distance ladder methods such as Type Ia Supernovae (SNe Ia) are significantly higher than the CMB measurements by Planck. The difference indicates a crisis in cosmology termed as Hubble tension. We present a review of the problem and analyze different data sets to test if the Hubble tension is real. We compare $H_0$ measurements from various data sets including different calibration schemes of SNe Ia and analyze the BAO data using the Bayesian approach. Our analysis suggests that the Tension between different data sets is real however, the difference is smaller than $3\sigma$.