Dark matter and dark energy accretion on to intermediate-mass black holes

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 e...

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Autores principales: Pepe, C., Pellizza, L.J., Romero, G.E.
Formato: JOUR
Materias:
Accretion, accretion discs
Black hole physics
Globular clusters: general
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00358711_v420_n4_p3298_Pepe
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00358711_v420_n4_p3298_Pepe2023-10-03T14:47:03Z Dark matter and dark energy accretion on to intermediate-mass black holes Pepe, C. Pellizza, L.J. Romero, G.E. Accretion, accretion discs Black hole physics Globular clusters: general 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. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00358711_v420_n4_p3298_Pepe
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Accretion, accretion discs
Black hole physics
Globular clusters: general
spellingShingle Accretion, accretion discs
Black hole physics
Globular clusters: general
Pepe, C.
Pellizza, L.J.
Romero, G.E.
Dark matter and dark energy accretion on to intermediate-mass black holes
topic_facet Accretion, accretion discs
Black hole physics
Globular clusters: general
description 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. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS.
format JOUR
author Pepe, C.
Pellizza, L.J.
Romero, G.E.
author_facet Pepe, C.
Pellizza, L.J.
Romero, G.E.
author_sort Pepe, C.
title Dark matter and dark energy accretion on to intermediate-mass black holes
title_short Dark matter and dark energy accretion on to intermediate-mass black holes
title_full Dark matter and dark energy accretion on to intermediate-mass black holes
title_fullStr Dark matter and dark energy accretion on to intermediate-mass black holes
title_full_unstemmed Dark matter and dark energy accretion on to intermediate-mass black holes
title_sort dark matter and dark energy accretion on to intermediate-mass black holes
url http://hdl.handle.net/20.500.12110/paper_00358711_v420_n4_p3298_Pepe
work_keys_str_mv AT pepec darkmatteranddarkenergyaccretionontointermediatemassblackholes
AT pellizzalj darkmatteranddarkenergyaccretionontointermediatemassblackholes
AT romeroge darkmatteranddarkenergyaccretionontointermediatemassblackholes
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