Résumé / Abstract Seminaire_GReCO

"Weak Lensing of Baryon Acoustic Oscillations, of CMB and of everything in between"

A. Vallinotto
Institut d'Astrophysique de Paris (Paris, France)

In this talk I will first introduce Baryon Acoustic Oscillations (BAO) and weak lensing. I will then show how weak lensing affects galaxy survey and how the measurement of BAO sound horizon is robust with respect to this particular effect. I will then move on to generalize the results obtained for galaxy surveys, showing how the weak lensing may affect the measurement of non-gaussianity through the 3-point correlation function of galaxies and how it is possible to build a very general formalism that allows one to quantify the weak lensing contribution to any cosmological two point function.

lundi 3 mars 2008 - 11:00
Salle des séminaires Évry Schatzman,
Institut d'Astrophysique de Paris

Page web du séminaire / Seminar's webpage