2 papers
astro-ph.CO2025
Understanding acoustic scale observations: the one-sided fight against
Antony Lewis, Ewan Chamberlain
The cosmic microwave background (CMB) and baryon acoustic oscillations (BAO) provide precise measurements of the cosmic expansion history through the comoving acoustic scale. The C…
astro-ph.CO2025
Detectable signals of post-Born lensing curl B-modes
Mathew Robertson, Giulio Fabbian, Julien Carron +1
Curl lensing, also known as lensing field-rotation or shear B-modes, is a distinct post-Born observable caused by two lensing deflections at different redshifts (lens-lens coupling…