Orateur
Hanyu Cheng
Description
This talk will explore deviations from the standard cosmological model across cosmic history. First, I will present data analysis results on dynamical dark energy using a novel pressure parametrization and four parameters parametrization testing by the latest datasets. Second, I will discuss model-independent reconstructions of the reionization history using Gaussian processes. We utilize these reconstructions to place robust bounds on exotic energy injections and decaying particle models.
Auteur
Co-auteurs
Prof.
David Marsh
(King's College London)
Prof.
Eleonora Di Valentino
(University of Sheffield)
Prof.
Luca Visinelli
(Università di Salerno & INFN)
Dr
Luis Escamilla
(Istanbul Tech. U.)
Prof.
Supriya Pan
(Presidency U.)
M.
Ziwen Yin
(Tsung-Dao Lee Inst.)