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astro-ph.CO2026
Interpretation of Nanohertz Gravitational Waves via Cosmic Strings in Post-BBN Matter and Kination Domination
Raymond T. Co, Siu Cheung Lam, Taegyu Lee
Recent pulsar timing array (PTA) observations have reported evidence for a common low frequency signal consistent with a stochastic gravitational wave background. In this work, we…
astro-ph.CO2026
New Isocurvature Constraints from JWST UV Luminosity Function
Raymond T. Co, Sai Chaitanya Tadepalli
We constrain uncorrelated primordial isocurvature perturbations using a combination of large- and small-scale cosmological probes, with the small-scale data provided by the ultravi…