Universe is Teeming with Quintillions of Stellar-Mass Black Holes astronomy space science
A team of astrophysicists from Italy and the United Kingdom has calculated that in the observable Universe, a sphere of diameter around 90 billion light-years, there are at least 40*10An artist’s impression of a group of stellar-mass black holes. Image credit: NASA / ESA / Hubble / N. Bartmann.
“One of the most fundamental quantities for demographic studies of the black hole population is constituted by the relic mass function, namely the number density of black holes per comoving volume and unit black hole mass, as a function of redshift,” said Dr. Alex Sicilia of the Scuola Internazionale Superiore di Studi Avanzati and colleagues.
“The innovative character of this work is in the coupling of a detailed model of stellar and binary evolution with advanced recipes for star formation and metal enrichment in individual galaxies,” Dr. Sicilia said.
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