3 papers
astro-ph.CO2026
Ultra-light axion constraints from Planck and ACT: the role of nonlinear modelling
Lauren Gaughan, Anne M. Green, Adam Moss
We study how constraints on the abundance of ultralight axions (ULAs) from cosmic microwave background (CMB) data depend on their nonlinear modelling. We focus on the axion mass ra…
astro-ph.CO2026
CMB anisotropies from cosmic (super)strings in light of ACT DR6
Juhan Raidal, Anastasios Avgoustidis, Edmund Copeland +1
We present updated constraints on cosmic string and superstring parameters derived from Cosmic Microwave Background (CMB) anisotropies. The constraints are obtained via Markov Chai…
astro-ph.CO2025
The stochastic gravitational wave background from cosmic superstrings
Anastasios Avgoustidis, Edmund J. Copeland, Adam Moss +1
We study the stochastic gravitational wave background sourced by a network of cosmic superstrings and demonstrate that incorporating higher-mass string species, beyond the fundamen…