INVESTIGADORES
PELLIZZA GONZALEZ Leonardo Javier
artículos
Título:
Dark matter and dark energy accretion on to intermediate-mass black holes
Autor/es:
PEPE, C.; PELLIZZA, L. J.; ROMERO, G. E.
Revista:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2012 vol. 420 p. 3298 - 3302
ISSN:
0035-8711
Resumen:
In this work we investigate the accretion of cosmological fluids on to
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 on to an intermediate-mass black hole is
negligible. On the other hand, if cold dark matter has a non-vanishing
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.