Speaker
Prof.
Subir Sarkar
(University of Oxford (GB))
Description
The standard model of cosmology is based on the assumption that the universe is (statistically) isotropic and homogeneous. The dipole anisotropy of the CMB must then be attributed to our peculiar motion, due to local inhomogeneity, wrt the cosmic rest frame in which the CMB looks isotropic. If so, there should be a corresponding dipole in the skymap of high redshift sources. Using catalogues of radio sources & quasars we find however that the observed dipole is ~twice what is expected. This calls into question the assumption of the FLRW metric and the consequent inference that the universe is dominated by dark energy.
Author
Prof.
Subir Sarkar
(University of Oxford (GB))
