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
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/252172
Ver los metadatos del registro completo
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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 Técnicas2025-10-22T11:13:57Zoai: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:34982025-10-22 11:13:58.106CONICET 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 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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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 |
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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 |
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eng |
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eng |
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Wiley Blackwell Publishing, Inc |
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Wiley Blackwell Publishing, Inc |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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