9 citations · 22 across the 29 of their papers we have counts for
31 papers
Same Events, Weaker Bound: Model Dependence in Magellanic Microlensing Limits on Primordial Black Holes
David Morales-Zapien, Lucas Brown, Stefano Profumo
OGLE microlensing of the Magellanic Clouds sets the leading bounds on primordial black holes (PBHs) as dark matter from to . Holding the detected events…
From Axion Detection to Dark Matter Astronomy
Jae Hyeok Chang, Stefano Profumo
A global haloscope network could turn an axion discovery into astronomy of dark matter substructure and transients. We combine interferometric phase, spatial coherence, and spectro…
Black Holes as Frequency-Dependent Filters of Stochastic Gravitational Waves
Sefi Katznelson, Aidan Minger, Stefano Profumo
Black holes ring when perturbed, whereas their response to a stationary gravitational-wave background is a real-frequency scattering problem, not a source of additional quasi-norma…
Self-Similar Mass Spectra of Hierarchical Black Hole Mergers
Liam Blum, Stefano Profumo, Ryan Schantz +1
Black holes that merge repeatedly carry a record of that history in their mass distribution. We treat hierarchical merging as a coagulation problem, in which a single kernel encode…
What Naturalness Measures: Fine-Tuning and Informational Invariants in Cosmology and Dark Matter
Stefano Profumo
Naturalness is commonly presented as an objective constraint on physical theories: a model requiring fine-tuning is judged implausible. This presentation conflates a representation…
Charting Dark Matter down to the neutrino floor/fog in the 2HD+a scenario
Giorgio Arcadi, Abdelhak Djouadi, Stefano Profumo
Next-generation direct detection experiments will probe dark matter (DM) scattering cross-sections deep into the neutrino fog, the regime where coherent neutrino scattering becomes…
Cosmology as Representation: Informational Invariance and the Limits of Scientific Realism
Stefano Profumo
Modern cosmology is often taken to provide an increasingly accurate description of the universe's underlying ontology through progressively refined mathematical models. I challenge…
Are Primordial Black Holes a Natural Dark Matter Candidate?
Stefano Profumo
Primordial black holes (PBHs) in the asteroid-mass window (- g) can account for all of the dark matter without violating any observational constraint, yet are rou…
G objects as Primordial Black Hole-Neutron Star Remnants: Population Modeling and Multi-Wavelength Observables
David Morales-Zapien, Stefano Profumo
The nature of the so-called G objects orbiting the Galactic Center remains unresolved. These sources exhibit compact Br emission, extreme infrared colors, and remarkable dynamic…
Ghost Degrees of Freedom Without Quantum Runaway: Exact Moment Bounds from an Operator Conservation Law
Christopher Ewasiuk, Stefano Profumo
We prove an exact quantum conservation law for a harmonic oscillator coupled to a ghost degree of freedom: a second classical conserved quantity lifts to a quantum operator that co…
What Are Pulsar Companions Made of? Using Gravitational Tides to Probe Their Compositions
Liam Colombo-Murphy, Lucas Brown, Stefano Profumo +2
Low eccentricity, short orbital period pulsar companions may provide a probe to study novel dense and stable exoplanet internal compositions due to the potentially significant orbi…
High-frequency gravitational wave transients from superradiance
Henry Su, Lucas Brown, Christopher Ewasiuk +1
Ultralight bosons can form macroscopic gravitational-atom clouds around rotating black holes via superradiance, sourcing quasi-monochromatic gravitational waves through level trans…
Quantum Tunneling of Primordial Black Holes to White Holes: Rates, Constraints, and Implications for Fast Radio Bursts
Christopher Ewasiuk, Stefano Profumo
We calculate the present-day and cosmological volumetric rate of primordial black hole (PBH) quantum tunneling events to white holes, incorporating the competition between Hawking…
Probing Planck-Scale Physics with High-Frequency Gravitational Waves
Stefano Profumo
We develop a framework for testing quantum gravity through the stochastic gravitational-wave background produced by evaporating near-Planck-mass primordial black holes. Because gra…
Backwards Gamma-Ray Bursts: Searching for Exploding Primordial Black Holes in Short-Duration GRB Catalogs
Stefano Profumo, Kally Wen
We present a systematic search for signatures of terminal black-hole evaporation in short gamma-ray burst (sGRB) catalogs. An exploding primordial black hole (PBH) undergoing final…
Structure Formation with Dark Magnetohydrodynamics
Pierce Giffin, Andrew Liu, Jeremias Boucsein +4
Long-range interactions in the dark sector can give rise to collective plasma phenomena that are capable of modifying the evolution of dark matter halos. We present the first study…
Chemical and Kinetic Equilibrium in Cosmology: Facts and Myths
Stefano Profumo
We clarify that chemical and kinetic equilibration in the early Universe are distinct: neither implies the other, and the ordering of their decouplings need not be universal. We il…
A Multi-Wavelength Survey of Transient Lensing Opportunities for Primordial Black Hole Searches
Stefano Profumo
Gravitational lensing of short astrophysical transients provides a uniquely direct avenue for searching for primordial black holes (PBHs) across a vast range of masses. While past…
Primordial black holes versus their impersonators at gravitational wave observatories
Andrea Begnoni, Stefano Profumo
The detection of primordial black holes (PBHs) would mark a major breakthrough, with far-reaching implications for early universe cosmology, fundamental physics, and the nature of…
Precision gravity constraints on large dark sectors
Christopher Ewasiuk, Stefano Profumo
General relativity, treated as a low energy effective field theory, predicts quantum corrections to Newtons law of gravitation arising from loops of matter and graviton fields. Whi…
Primordial Black Holes and the First Stars
Julia Monika Koulen, Stefano Profumo, Nolan Smyth
Primordial black holes (PBHs) constitute a compelling dark matter candidate whose gravitational effects could significantly influence early cosmic structure formation. We investiga…
Dark-sector modifications to Kerr and Reissner-Nordstrom black hole evaporation
Christopher Ewasiuk, Stefano Profumo
We present a comprehensive comparative analysis of the evaporation dynamics of Schwarzschild, Kerr, and Reissner- Nordstrom black holes, focusing on the evolution of their mass, ch…
A Louder Gravitational Wave Bang from a Fast-Expanding Universe
Lucas Brown, Stefano Profumo, Aditi Gangadharan +1
A strong first-order phase transition in a dark sector may produce all or part of the low-frequency gravitational wave signal recently reported by the NANOGrav Collaboration and ot…
Dark Baryon Black Holes
Stefano Profumo
We explore a novel mechanism for dark matter production through the formation of light black holes from the collapse of dark baryons in confining SU(N) gauge theories in the large…