Centrum Astronomii
Wydział Fizyki, Astronomii i Informatyki Stosowanej, Uniwersytet Mikołaja Kopernika

Virialisation-induced negative curvature as a physical explanation for dark energy

dr hab. Boudewijn Roukema, prof. UMK

By definition, the standard, homogeneous models of the Universe are likely to fail when the Universe is inhomogeneous. The virialisation fraction measures inhomogeneity. Its redshift evolution roughly matches the evolution of would-be "dark energy", if the "dark energy" is inferred from the observations by assuming a homogeneous model. This suggests that "dark energy" is a misinterpretation of the fact that we live in the inhomogeneous epoch of the Universe. A virialisation-induced negative curvature approximation will be proposed to improve the accuracy of the homogeneous models (while making them less precise).

Data
08.04.2013 - 11:15
Miejsce
Sala seminaryjna KRA