3 papers
astro-ph.CO2026
Comparing cosmic shear nulling methods for Stage-IV surveys
Naomi Clare Robertson, Alex Hall
We present an analysis comparing nulling strategies for reducing the impact of baryon feedback on cosmic shear measurements. We consider three different approaches which aim to `nu…
astro-ph.CO2025
The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and its Implications for Structure Growth
Frank J. Qu, Blake D. Sherwin, Mathew S. Madhavacheril +155
We present new measurements of cosmic microwave background (CMB) lensing over sq. deg. of the sky. These lensing measurements are derived from the Atacama Cosmology Telescop…
astro-ph.CO2025
Baryon-free tension with Stage IV cosmic shear surveys
Ottavia Truttero, Joe Zuntz, Alkistis Pourtsidou +1
Accurately modelling matter power spectrum effects at small scales, such as baryonic feedback, is essential to avoid significant bias in the estimation of cosmological parameters w…