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Updated: Jun 12, 2025

Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects
Published on: February 8, 2014
Coexistence Test of Primordial Black Holes and Particle Dark Matter from Diffractive Lensing
Han Gil Choi1, Sunghoon Jung2,3, Philip Lu2
1Cosmology, Gravity and Astroparticle Physics Group, Center for Theoretical Physics of the Universe, <a href="https://ror.org/00y0zf565">Institute for Basic Science (IBS)</a>, Daejeon 34126, Korea.
Abstract:
If dark matter (DM) consists of primordial black holes (PBHs) and particles simultaneously, PBHs are generically embedded within particle DM halos. Such "dressed PBHs" (dPBHs) are subject to modified constraints compared to PBHs and can contribute to significant DM abundance in the mass range 10^{-1}-10^{2}M_{⊙}. We show that diffractive lensing of chirping gravitational waves from binary mergers can not only discover, but can also identify dPBH lenses and discriminate them from bare PBHs on the event-by-event basis, with potential to definitively establish the coexistence of subdominant PBHs and particle DM.
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