Physikalisches Kolloquium: Beyond the cosmological standard model

Jul 13
13. July 2022 12:00 - 13:00
HH und Online via Zoom

Beyond the cosmological standard model

The standard model of cosmology assumes that the universe is isotropic & homogeneous when averaged on large scales. The dipole anisotropy observed in the CMB is attributed to our peculiar (non-Hubble) motion, due to local inhomogeneities, wrt the cosmic rest frame in which the CMB is isotropic. There should then be a corresponding dipole in the distribution of high redshift sources. Using catalogues of radio sources & quasars we find that the observed dipole does not match what is expected. This challenges the standard assumption of the FLRW metric, and the consequent inference that the universe is dominated by a Cosmological Constant, aka dark energy.

Sprecher: Prof. Dr. Subir Sarkar, University of Oxford

Kontakt: Prof. Dr. S. Funk

Thema: Physikalisches Kolloquium SS 2022

Zoom-Meeting beitreten

Meeting-ID: 683 2175 0234
Kenncode: 059959
Schnelleinwahl mobil
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