Primordial black holes remain viable dark matter candidates despite extended mass distribution
Published on:
6 March 2024
Primary Category:
Cosmology and Nongalactic Astrophysics
Paper Authors:
Matthew Gorton,
Anne M. Green
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Key Details
Primordial black holes may comprise all dark matter if in 10^17 - 10^22 g 'asteroid-mass window'
Black holes formed from collapse of density perturbations have extended mass functions
Recalculated constraints using improved fitting functions for mass functions
Asteroid-mass window remains open for current constraints unless mass function is very wide
Future constraints could exclude primordial black holes as all dark matter depending on mass function properties
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AI generated summary
Primordial black holes remain viable dark matter candidates despite extended mass distribution
Primordial black holes formed from density fluctuations in the early universe are expected to have a range of masses, known as an extended mass function. This paper re-evaluates constraints on primordial black holes as dark matter candidates, considering more accurate fitting functions for their mass distribution. The analysis shows primordial black holes can still account for all dark matter, but future observations may exclude this possibility depending on properties of the mass function.
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