The Growth of a Primordial Black Hole at the Center of a Star

Details The Growth of a Primordial Black Hole at the Center of a Star The Growth of a Primordial Black Hole at the Center of a Star

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jkas...23..116p&link_type=abstract

Journal of the Korean Astronomical Society, vol. 23, no. 2, p.116-121

Astronomy and Astrophysics

Astronomy

Scientific paper

It has been suggested that there could be a large number of primordial black holes which were formed in the early universe. We analyze the growth of such a primordial black hole following two different accretion rates - the Eddington accretion rate and the Bondi accretion rate - at the center of a host star like the sun. We find that ra primordial balck hole with M < ~ 10E17g cannot substantially grow in any case throughout the lifetime of a host star. If M > ~ 10E17g, the evolution of host star depends entirely on the mode of accretion, but it ends as a black in either case. Since more stars may have primordial black holes at the center of a galaxy this may result in a cluster of such black holes, and the cluster may eventually collapse to produce a single supermassive black hole.

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