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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.HE2026
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…
gr-qc2026
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…