Xinkang Wang L&S Sciences
An Investigation of Redshift-Space Distortion(RSD) and Alcock-Paczynski(AP) Test Degeneracy
This project aims at providing constraints on the dark energy parameters through galaxy surveys. In theory, given the precise values of cosmological parameters, including the dark energy parameters (e.g., the density parameter ), we are able to determine the history and the ultimate fate of the universe.Therefore, to better understand the evolution of the universe and to improve current related theories in physics, we need to determine the values of dark energy parameters with higher precision to put in another way, we need to put further constraints on the parameters. To date, physicists have established several independent methods to constrain the dark energy parameters, while recent research suggested that the methods gained stronger constraining power when taken as a whole. Given the situation, this project intends to find a good combination of two existing methods (Redshift-Space Distortion and Alcock-Paczynski Test) through galaxy surveys, trying to provide further constraints on the dark energy parameters.