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astro-ph.CO2026
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…
astro-ph.CO2025
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…