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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Detalles Bibliográficos
Publicado: 2012
Materias:
Accretion, accretion discs
Black hole physics
Globular clusters: general
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v420_n4_p3298_Pepe
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
id paper:paper_00358711_v420_n4_p3298_Pepe
record_format dspace
spelling paper:paper_00358711_v420_n4_p3298_Pepe2023-06-08T15:01:33Z Dark matter and dark energy accretion on to intermediate-mass black holes 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. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v420_n4_p3298_Pepe 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
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.
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
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v420_n4_p3298_Pepe
http://hdl.handle.net/20.500.12110/paper_00358711_v420_n4_p3298_Pepe
_version_ 1768544030620123136

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