The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?

Autores
Ferrero, Santiago Ismael; Abadi, Mario Gabriel; Navarro, Julio F.; Sales, Laura Virginia; Gurovich, Sebastian
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Ferrero, Santiago Ismael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Abadi, Mario Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Navarro, Julio F.. University of Victoria; Canadá
Fil: Sales, Laura Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Invest.en Astronomia Teórica y Exptal.; Argentina
Fil: Gurovich, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Materia
ACCRETION
ACCRETION DISKS
BLACK HOLE PHYSICS
GLOBULAR CLUSTERS: GENERAL
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/252172
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?Ferrero, Santiago IsmaelAbadi, Mario GabrielNavarro, Julio F.Sales, Laura VirginiaGurovich, SebastianACCRETIONACCRETION DISKSBLACK HOLE PHYSICSGLOBULAR CLUSTERS: GENERALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In 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.Fil: Ferrero, Santiago Ismael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Abadi, Mario Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Navarro, Julio F.. University of Victoria; CanadáFil: Sales, Laura Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Invest.en Astronomia Teórica y Exptal.; ArgentinaFil: Gurovich, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaWiley Blackwell Publishing, Inc2012-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/252172Ferrero, Santiago Ismael; Abadi, Mario Gabriel; Navarro, Julio F.; Sales, Laura Virginia; Gurovich, Sebastian; The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 425; 4; 3-2012; 2817-28230035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/425/4/2817/1078028info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.21623.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:45:04Zoai:ri.conicet.gov.ar:11336/252172instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:45:05.033CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?
title The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?
spellingShingle The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?
Ferrero, Santiago Ismael
ACCRETION
ACCRETION DISKS
BLACK HOLE PHYSICS
GLOBULAR CLUSTERS: GENERAL
title_short The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?
title_full The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?
title_fullStr The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?
title_full_unstemmed The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?
title_sort The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?
dc.creator.none.fl_str_mv Ferrero, Santiago Ismael
Abadi, Mario Gabriel
Navarro, Julio F.
Sales, Laura Virginia
Gurovich, Sebastian
author Ferrero, Santiago Ismael
author_facet Ferrero, Santiago Ismael
Abadi, Mario Gabriel
Navarro, Julio F.
Sales, Laura Virginia
Gurovich, Sebastian
author_role author
author2 Abadi, Mario Gabriel
Navarro, Julio F.
Sales, Laura Virginia
Gurovich, Sebastian
author2_role author
author
author
author
dc.subject.none.fl_str_mv ACCRETION
ACCRETION DISKS
BLACK HOLE PHYSICS
GLOBULAR CLUSTERS: GENERAL
topic ACCRETION
ACCRETION DISKS
BLACK HOLE PHYSICS
GLOBULAR CLUSTERS: GENERAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Ferrero, Santiago Ismael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Abadi, Mario Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Navarro, Julio F.. University of Victoria; Canadá
Fil: Sales, Laura Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Grupo de Invest.en Astronomia Teórica y Exptal.; Argentina
Fil: Gurovich, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
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.
publishDate 2012
dc.date.none.fl_str_mv 2012-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/252172
Ferrero, Santiago Ismael; Abadi, Mario Gabriel; Navarro, Julio F.; Sales, Laura Virginia; Gurovich, Sebastian; The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 425; 4; 3-2012; 2817-2823
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/252172
identifier_str_mv Ferrero, Santiago Ismael; Abadi, Mario Gabriel; Navarro, Julio F.; Sales, Laura Virginia; Gurovich, Sebastian; The dark matter haloes of dwarf galaxies: a challenge for the Λ cold dark matter paradigm?; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 425; 4; 3-2012; 2817-2823
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/425/4/2817/1078028
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.21623.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613417689677824
score 13.070432

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