Primordial Black Hole
As a candidate of dark matter, primordial black holes (PBHs) also provide a possible explanation to the gravitational-wave events detected by LIGO and Virgo. However, the non-detection of stochastic gravitational wave background gives a stringent constraint on the abundance of stellar-mass PBHs in dark matter. We will also extend the discussion from the PBHs with a single mass to the case with an extended mass function and some other related topics.
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