Velocity dispersion data from Leo I rules out PBH dark matter fractions f_PBH ≳ 2.0 × (1 M_⊙ / m_PBH)^2 at 99.99% confidence for masses ~1-1000 M_⊙.
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Updated compilation shows PBHs are tightly constrained across 55 orders of magnitude in mass, ruling out dominant dark matter contributions except in narrow windows, with many limits carrying observational uncertainties.
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Constraining primordial black holes in dark matter with kinematics of dwarf galaxies
Velocity dispersion data from Leo I rules out PBH dark matter fractions f_PBH ≳ 2.0 × (1 M_⊙ / m_PBH)^2 at 99.99% confidence for masses ~1-1000 M_⊙.
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Constraints on Primordial Black Holes
Updated compilation shows PBHs are tightly constrained across 55 orders of magnitude in mass, ruling out dominant dark matter contributions except in narrow windows, with many limits carrying observational uncertainties.