Probing dark matter and the expansion history of the Universe with Lyman-alpha in absorption

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• Martin Haehnelt (IOA, Cambridge)
• Wednesday 02 May 2012, 14:15-15:15
• MR2, Centre for Mathematical Sciences.

If you have a question about this talk, please contact Pau Figueras.

The Lyman-alpha forest in QSO absorption spectra is a sensitive probe of the matter distribution as well as the physical state of the Intergalactic Medium. I will present constraints on the mass of (warm) dark matter particles and discuss the ionization state of the Intergalactic Medium at $z>5$. I will further discuss prospects of measuring the redshift drift and improving constraints on the variability of fundamental constants with the ultra-stable high-resolution spectrograph proposed for the ESO -ELT.

This talk is part of the Theoretical Physics Colloquium series.

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