470 citations · 2.1k across the 46 of their papers we have counts for
46 papers
Axion Clouds around Neutron Stars
Dion Noordhuis, Anirudh Prabhu, Christoph Weniger +1
Recent work has shown that axions can be efficiently produced via non-stationary pair plasma discharges in the polar cap region of pulsars. Here, we point out that for axion masses…
Precision CMB constraints on eV-scale bosons coupled to neutrinos
Stefan Sandner, Miguel Escudero, Samuel J. Witte
The cosmic microwave background (CMB) has proven to be an invaluable tool for studying the properties and interactions of neutrinos, providing insight not only into the sum of neut…
Constraining the X-ray heating and reionization using 21-cm power spectra with Marginal Neural Ratio Estimation
Anchal Saxena, Alex Cole, Simon Gazagnes +3
Cosmic Dawn (CD) and Epoch of Reionization (EoR) are epochs of the Universe which host invaluable information about the cosmology and astrophysics of X-ray heating and hydrogen rei…
Transient Radio Lines from Axion Miniclusters and Axion Stars
Samuel J. Witte, Sebastian Baum, Matthew Lawson +3
Gravitationally bound clumps of dark matter axions in the form of 'miniclusters' or even denser 'axion stars' can generate strong radio signals through axion-photon conversion when…
Novel Constraints on Axions Produced in Pulsar Polar-Cap Cascades
Dion Noordhuis, Anirudh Prabhu, Samuel J. Witte +3
Axions can be copiously produced in localized regions of neutron star magnetospheres where the ambient plasma is unable to efficiently screen the induced electric field. As these a…
Revisiting constraints on WIMPs around primordial black holes
Estanis Utrilla Ginés, Samuel J. Witte, Olga Mena
While Primordial Black Holes (PBHs) with masses cannot comprise the entirety of dark matter, the existence of even a small population of t…