COSMO19

Primordial black hole tower: Dark matter, earth-mass, and LIGO black holes

Not scheduled

25m

Poster Gravitational Waves and Black Holes Parallel Sessions: Gravitational Waves and Black Holes (C.A.R.L., H08)

Description

We investigate a possibility of primordial black hole (PBH) formation with a hierarchical mass spectrum in multiple phases of inflation. As an example, we find that one can simultaneously realize a mass spectrum which has recently attracted a lot of attention, stellar-mass PBHs ($\sim \mathcal{O}(10)M_{\odot }$) as a possible source of binary black holes detected by LIGO/VIRGO collaboration, asteroid-mass ($\sim \mathcal{O}({10}^{-12})M_{\odot }$) as a main component of dark matter, and earth-mass ($\sim \mathcal{O}({10}^{-5})M_{\odot }$) as a source of ultrashort-timescale events in OGLE microlensing data. The recent refined swampland conjecture may support these multi-phase inflationary scenario with hierarchical mass PBHs as a transition