17 papers
Kick Velocities and Mass Function of Free-Floating Planets from Dynamical Ejection in Hierarchical Three-Body Systems
Hugh Kramer, Stefano Profumo
Free-floating planets (FFPs), also known as rogue planets, are sub-stellar objects that travel through the Galaxy unbound to any host star. Their velocity distribution carries info…
Polarized and unpolarized synchrotron emission from dark matter in extragalactic targets
Javier Reynoso-Cordova, Catherine Gibson, Stefano Profumo
We compute 95% confidence-level upper limits on the dark matter annihilation cross section and decay rate from both total-intensity and polarized synchrotron emission in five extra…
Non-Thermal Production of Sexaquark Dark Matter
Marianne Moore, Stefano Profumo
Standard thermal freeze-out scenarios with QCD-scale interaction rates predict a sexaquark relic abundance many orders of magnitude below the observed dark matter density,…
The Cosmic Horizon of Neutrinos
James Fardeen, Stefano Profumo, M. Grant Roberts
The persistent discrepancy between the experimental measurement and the Standard Model (SM) prediction of the muon's anomalous magnetic moment remains one of the most in…
The Scoured Spike: Suppression of Indirect Dark Matter Signals by a Hidden Companion
Jaden Lopez, Stefano Profumo
A massive ``dark companion'' -- such as an intermediate-mass black hole or other compact dark object -- orbiting the supermassive black hole at the Galactic Center can dynamically…
Little Red Dots from Ultra-Strongly Self-Interacting Dark Matter
M. Grant Roberts, Lila Braff, Aarna Garg +2
We investigate the possibility that the recently identified population of high-redshift, obscured quasars - known as "Little Red Dots" (LRDs) - originates from early black hole see…