AUTHOR=Villanueva-Domingo Pablo , Mena Olga , Palomares-Ruiz Sergio TITLE=A Brief Review on Primordial Black Holes as Dark Matter JOURNAL=Frontiers in Astronomy and Space Sciences VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2021.681084 DOI=10.3389/fspas.2021.681084 ISSN=2296-987X ABSTRACT=

Primordial black holes (PBHs) represent a natural candidate for one of the components of the dark matter (DM) in the Universe. In this review, we shall discuss the basics of their formation, abundance and signatures. Some of their characteristic signals are examined, such as the emission of particles due to Hawking evaporation and the accretion of the surrounding matter, effects which could leave an impact in the evolution of the Universe and the formation of structures. The most relevant probes capable of constraining their masses and population are discussed.