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Using the Full Power of the Cosmic Microwave Background to Probe Axion Dark Matter
Renée Hlozek, David J. E. Marsh, Daniel Grin
The cosmic microwave background (CMB) places strong constraints on models of dark matter (DM) that deviate from standard cold DM (CDM), and on initial conditions beyond the scalar…
Structure Formation and Microlensing with Axion Miniclusters
Malcolm Fairbairn, David J. E. Marsh, Jérémie Quevillon +1
If the symmetry breaking responsible for axion dark matter production occurs during the radiation-dominated epoch in the early Universe, then this produces large amplitude perturba…
The Spectrum of the Axion Dark Sector
Matthew J. Stott, David J. E. Marsh, Chakrit Pongkitivanichkul +2
Axions arise in many theoretical extensions of the Standard Model of particle physics, in particular the "string axiverse". If the axion masses, , and (effective) decay consta…
Constraining the mass of light bosonic dark matter using SDSS Lyman- forest
Eric Armengaud, Nathalie Palanque-Delabrouille, Christophe Yèche +2
If a significant fraction of the dark matter in the Universe is made of an ultra-light scalar field, named fuzzy dark matter (FDM) with a mass of the order of $10^{-22}-10^{-…
Searching for the QCD Axion with Gravitational Microlensing
Malcolm Fairbairn, David J. E. Marsh, Jérémie Quevillon
The phase transition responsible for axion dark matter production can create large amplitude isocurvature perturbations which collapse into dense objects known as axion minicluster…