Primordial black holes (PBHs) are objects that formed just fractions of a second after the Big Bang, considered by many researchers among the principal candidates in explaining the nature of dark matter, above all following direct observations of gravitational waves by the VIRGO and LIGO detectors in 2016. “We have tested a scenario in which dark matter is composed of non-stellar black holes, formed in the primordial universe,” says Riccardo Murgia, lead author of the study recently published in Physical Review Letters. The research was carried out together with his colleagues Giulio Scelfo and Matteo Viel of SISSA—International School for Advanced Studies and INFN—Istituto Nazionale di Fisica Nucleare (Trieste division) and Alvise Raccanelli of CERN.
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Source: Phys.org