43 citations · 196 across the 14 of their papers we have counts for
Showing 2023Show all
3 papers · 1 filter
hep-ph2023★ 2 cited
Evaporating Kerr black holes as probes of new physics
Marco Calzà, João G. Rosa
In the string axiverse scenario, primordial black holes (PBHs) can sustain non-negligible spin parameters as they evaporate. We show that tracking both the mass and spin evolution…
gr-qc2023
Determining the spin of light primordial black holes with Hawking radiation II: high spin regime
Marco Calzà, João G. Rosa
We propose a method to determine the mass and spin of primordial black holes based on measuring the energy and emission rate at the dipolar and quadrupolar peaks in the primary pho…
hep-ph2023★ 2 cited
Primordial black hole superradiance and evaporation in the string axiverse
Marco Calzà, João G. Rosa, Filipe Serrano
In the string axiverse scenario, light primordial black holes may spin up due to the Hawking emission of a large number of light (sub-MeV) axions. We show that this may trigger sup…