34 citations · 34 across the 2 of their papers we have counts for
3 papers
astro-ph.CO2026
Stimulated capture of axion dark matter around primordial black holes
Nuno P. Branco, João G. Rosa
We study the stimulated capture of axion and axion-like particles around primordial black holes, mediated by quartic self-interactions. We identify the parametric regions where Bos…
astro-ph.CO2025
Constraints on Dark Matter Structures around Gaia Black Holes
Nuno P. Branco, Ricardo Z. Ferreira, João G. Rosa +1
We demonstrate that Gaia's detection of stars on wide orbits around black holes opens a new observational window on dark matter structures -- such as scalar clouds and dark matter…
hep-ph2023★ 34 cited
Superradiant axion clouds around asteroid-mass primordial black holes
Nuno P. Branco, Ricardo Z. Ferreira, João G. Rosa
We analyze the dynamics and observational signatures of axion clouds formed via the superradiant instability around primordial black holes, focusing on the mass range $10^{14}-10^{…