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Preprint Sep 2026

Supernova microlensing as a probe of ultracompact minihalos and primordial cosmology

We propose using supernova microlensing to search for ultracompact minihalos and other extended dark structures seeded by enhanced primordial small-scale power. Unlike conventional microlensing searches, which are often optimized for primordial black holes, cosmological supernovae are sensitive to lenses with physical...

D. Croon, S. Muñoz, Miguel Zumalacárregui · 1 citation

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