470 citations · 2.1k across the 46 of their papers we have counts for
6 papers · 1 filter
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…
Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
Elcio Abdalla, Guillermo Franco Abellán, Amin Aboubrahim +200
In this paper we will list a few important goals that need to be addressed in the next decade, also taking into account the current discordances between the different cosmological…
Astrophysical and Cosmological Probes of Dark Matter
Kimberly K. Boddy, Mariangela Lisanti, Samuel D. McDermott +16
While astrophysical and cosmological probes provide a remarkably precise and consistent picture of the quantity and general properties of dark matter, its fundamental nature remain…
Extraterrestrial Axion Search with the Breakthrough Listen Galactic Center Survey
Joshua W. Foster, Samuel J. Witte, Matthew Lawson +4
Axion dark matter (DM) may efficiently convert to photons in the magnetospheres of neutron stars (NSs), producing nearly monochromatic radio emission. This process is resonantly tr…