Dark matter and dark energy accretion onto intermediate-mass black holes
Abstract
In this work we investigate the accretion of cosmological fluids onto an intermediate-mass black hole at the centre of a globular cluster, focusing on the influence of the parent stellar system on the accretion flow. We show that the accretion of cosmic background radiation and the so-called dark energy onto an intermediate-mass black hole is negligible. On the other hand, if cold dark matter has a nonvanishing pressure, the accretion of dark matter is large enough to increase the black hole mass well beyond the present observed upper limits. We conclude that either intermediate-mass black holes do not exist, or dark matter does not exist, or it is not strictly collisionless. In the latter case, we set a lower limit for the parameter of the cold dark matter equation of state.
Keywords
Cite
@article{arxiv.1111.5605,
title = {Dark matter and dark energy accretion onto intermediate-mass black holes},
author = {C. Pepe and L. J. Pellizza and G. E. Romero},
journal= {arXiv preprint arXiv:1111.5605},
year = {2015}
}
Comments
5 pages, 3 figures, Published in MNRAS