IRAP > Séminaires > Calendrier des séminaires > Cosmic shear: from galaxy shapes to cosmology

Cosmic shear: from galaxy shapes to cosmology

Séminaire le 28 mars 2019 de 11h00 à 12h00

Intervenant : Nicolas Martinet


Salle Lyot Salle Lyot

Weak lensing cosmic shear is one of the most powerful cosmological probes. In this presentation I will review the current state-of-the-art of such analyzes, from the accurate measurement of the galaxy image distortions up to the cosmological parameters' inference. I will illustrate my argument with two recent studies: an observational application of a new cosmic shear estimator to the on-going Kilo Degree Survey (KiDS) and a simulation of the impact of undetected galaxies on shear measurement for the Euclid satellite.

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