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dc.contributor.author
Magaña, J
dc.contributor.author
San Martín, M.
dc.contributor.author
Sureda, J
dc.contributor.author
Rubio, M
dc.contributor.author
Araya, I
dc.contributor.author
Padilla, Nelson David
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dc.date.available
2024-02-07T15:23:37Z
dc.date.issued
2023-04
dc.identifier.citation
Magaña, J; San Martín, M.; Sureda, J; Rubio, M; Araya, I; et al.; Extended primordial black hole mass functions with a spike; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 520; 3; 4-2023; 4276-4288
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/226163
dc.description.abstract
We introduce a modification of the Press–Schechter formalism aimed to derive general mass functions for primordial black holes (PBHs). In this case, we start from primordial power spectra (PPS) which include a monochromatic spike, typical of ultra slow-roll inflation models. We consider the PBH formation as being associated to the amplitude of the spike on top of the linear energy density fluctuations coming from a PPS with a blue index. By modelling the spike with a lognormal function, we study the properties of the resulting mass function spikes, and compare these to the underlying extended mass distributions. When the spike is at PBH masses, which are much lower than the exponential cut-off of the extended distribution, very little mass density is held by the PBHs within the spike, and it is not ideal to apply the Press–Schechter formalism in this case as the resulting characteristic overdensity is too different from the threshold for collapse. It is more appropriate to do so when the spike mass is similar to, or larger than the cut-off mass. Additionally, it can hold a similar mass density as the extended part. Such particular mass functions also contain large numbers of small PBHs, especially if stable PBH relics are considered, and they can provide ∼1000 M☉ seeds for the supermassive black holes at the centres of present-day galaxies. The constraints on the fraction of dark matter in PBHs for monochromatic mass functions are somewhat relaxed when there is an additional underlying extended distribution of masses.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DARK MATTER
dc.subject
THEORY
dc.subject
COSMOLOGY
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Extended primordial black hole mass functions with a spike
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-02-06T13:59:30Z
dc.journal.volume
520
dc.journal.number
3
dc.journal.pagination
4276-4288
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Oxford
dc.description.fil
Fil: Magaña, J. Universidad Central de Chile; Chile
dc.description.fil
Fil: San Martín, M.. Pontificia Universidad Católica de Chile; Chile
dc.description.fil
Fil: Sureda, J. Donostia International Physics Center; España
dc.description.fil
Fil: Rubio, M. Università degli Studi di Trieste; Italia. Scuola Internazionale Superiore Di Studi Avanzati (sissa);
dc.description.fil
Fil: Araya, I. Universidad Arturo Prat (unap);
dc.description.fil
Fil: Padilla, Nelson David. 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
dc.journal.title
Monthly Notices of the Royal Astronomical Society
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/520/3/4276/7008907
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stad261
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