Résumé / Abstract Journal-club_Univers

Journal-club Univers / Journal-club Universe

« Game of cones: 1-pt PDF of the weak-lensing convergence field with large deviation theory »

Alexandre Barthelemy
Institut d'Astrophysique de Paris (Paris, France)

I will present a method to compute the 1-point PDF of the convergence field taking into account the full geometry of the cone and the integration along the line of sight with Large deviation theory. Because the mixing of scales in the integration causes predictions to be unreliable in the tails of the PDF I will also present a nulling technique which circumvents the issue while still describing convergence-like observables and enables us to reach the percent precision in the tails for redshift ~1 and opening angles ~10 arcmin.
mardi 1 octobre 2019 - 11:15
Salle 281, Institut d'Astrophysique
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