3 papers
astro-ph.CO2026
Late Time Dynamical Dark Energy and the CMB-Distance Ladder Tension
George Efstathiou
The traditional distance ladder measures the standardized peak absolute magnitude M^B of Type Ia supernovae (SNIa). According to the SH0ES collaboration, the distance ladder value…
astro-ph.CO2025
Prospects for disentangling dark matter with weak lensing
Calvin Preston, Keir K. Rogers, Alexandra Amon +1
We investigate the degeneracy between the effects of ultra-light axion dark matter and baryonic feedback in suppressing the matter power spectrum. We forecast that galaxy shear dat…
astro-ph.CO2025
Baryon Acoustic Oscillations from a Different Angle
George Efstathiou
This paper presents an alternative way of analysing Baryon Acoustic Oscillation (BAO) distance measurements via rotations to define new quantities Dperp and Dpar. These quantities…