Hannover 2010 – wissenschaftliches Programm

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SYFC: Symposium Variations of Fundamental Constants: Theory and Experiment

SYFC 2: Variations of Fundamental Constants II

SYFC 2.2: Hauptvortrag

Montag, 8. März 2010, 17:00–17:30, A 001

The astrophysical search for varying fundamental constants — •Nils Prause — Hamburger Sternwarte, Germany

The currently favoured model of an accelerated universe with a cosmological constant gave rise to a number of theories, most of them including a variation of fundamental constants. Next to laboratory measurements, astrophysical observations are of great importance to probe these variations. Using the light of distant background quasars, the evolution of fundamental constants can be traced back to the the early stages of the universe. Molecular rotational and atomic resonance transitions were studied, using high resolution spectroscopy covering a wide wavelength range, to set constraints for the fine structure constant α and the proton to electron mass ratio µ.