3 papers
astro-ph.CO2025
Probing the Cosmological Principle with CMB lensing and cosmic shear
James Adam, Roy Maartens, Julien Larena +2
The standard cosmological model assumes the Cosmological Principle. However, recent observations hint at possible violations of isotropy on large scales, possibly through late-time…
astro-ph.CO2025
Anchors no more: Using peculiar velocities to constrain and the primordial Universe without calibrators
Davide Piras, Francesco Sorrenti, Ruth Durrer +1
We develop a novel approach to constrain the Hubble parameter and the primordial power spectrum amplitude using type Ia supernovae (SNIa) data. By considering…
astro-ph.CO2025
Detecting rotation from lensing in the CMB
Julien Carron, Enea di Dio, Ruth Durrer
An excellent estimate of the lensing signal is expected from the availability of deep and high-resolution polarization data in the near future. This is most important to allow for…