Conveners
Cosmology 4
- Yuting Wang (National Astronomical Observatories, CAS)
We apply an extended Alcock–Paczyński (AP) test to the SDSS data to constrain the dark energyequation of state with the Chevallier–Polarski–Linder (CPL) parametrization. The extended AP test method uses the full shape of redshift-space two-point correlation funcion (CF) as the standard shape in order to measure the expansion history of the universe. We calibrate the standard shape by using the...
The DES Collaboration observed 5000 sq. deg. of the southern sky during six years and measured the position on the sky, photometric redshift and shape of about 200 million galaxies, while simultaneously measuring the light curves of over 1500 type-Ia supernovae (SNe). With these two unprecedented samples, DES has determined cosmological parameters related to the expansion of the universe using...