3 papers
astro-ph.CO2026
Lensing without mixing: Probing Baryonic Acoustic Oscillations and other scale-dependent features in cosmic shear surveys
David Touzeau, Alexandre Barthelemy, Francis Bernardeau
Weak-gravitational lensing tends to wash out scale- and time-dependent features of the clustering of matter, such as the baryonic acoustic oscillations which appear in the form of…
astro-ph.CO2025
Cosmic shear nulling as a geometrical cosmological probe: Methodology and sensitivity to cosmological parameters and systematics
David Touzeau, Francis Bernardeau, Karim Benabed +1
Tomographic weak lensing surveys contain intrinsic symmetries that depend solely on the geometric structure of the Universe. These symmetries can be revealed through null tests and…
astro-ph.CO2025
Novel geometrical test of cosmological expansion from photometric data
David Touzeau, Francis Bernardeau, Karim Benabed +1
In tomographic cosmic-shear observations, the BNT (Bernardeau, Nishimichi, Taruya) transform, Bernardeau et al. (2014), allows to build weak lensing transformed maps for which the…