Anisotropic halo model

Autores
Sgró, Mario A.; Paz, Dante; Merchán, Manuel
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the present work, we extend the classic halo model for the large-scale matter distribution including a triaxial model for the halo profiles and their alignments. In particular, we derive general expressions for the halo-matter cross correlation function. In addition, by numerical integration, we obtain instances of the cross-correlation function depending on the directions given by halo shape axes. These functions are called anisotropic cross-correlations. With the aim of comparing our theoretical results with the simulations, we compute averaged anisotropic correlations in cones with their symmetry axis along each shape direction of the centre halo. From these comparisons we characterise and quantify the alignment of dark matter haloes on the ΛCDM context by means of the presented anisotropic halo model. As our model requires multidimensional integral computation we implement a Monte Carlo method on GPU hardware which allows us to increase the precision of the results whereas it improves the performance of the computation.
publishedVersion
Materia
Grupos de galaxias
Materia oscura
Estructura en gran escala
Galaxies: groups: general
Dark matter
Large-scale structure of universe
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Repositorio Digital Universitario (UNC)
Institución
Universidad Nacional de Córdoba
OAI Identificador
oai:rdu.unc.edu.ar:11086/1656

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oai_identifier_str oai:rdu.unc.edu.ar:11086/1656
network_acronym_str RDUUNC
repository_id_str 2572
network_name_str Repositorio Digital Universitario (UNC)
spelling Anisotropic halo modelSgró, Mario A.Paz, DanteMerchán, ManuelGrupos de galaxiasMateria oscuraEstructura en gran escalaGalaxies: groups: generalDark matterLarge-scale structure of universeIn the present work, we extend the classic halo model for the large-scale matter distribution including a triaxial model for the halo profiles and their alignments. In particular, we derive general expressions for the halo-matter cross correlation function. In addition, by numerical integration, we obtain instances of the cross-correlation function depending on the directions given by halo shape axes. These functions are called anisotropic cross-correlations. With the aim of comparing our theoretical results with the simulations, we compute averaged anisotropic correlations in cones with their symmetry axis along each shape direction of the centre halo. From these comparisons we characterise and quantify the alignment of dark matter haloes on the ΛCDM context by means of the presented anisotropic halo model. As our model requires multidimensional integral computation we implement a Monte Carlo method on GPU hardware which allows us to increase the precision of the results whereas it improves the performance of the computation.publishedVersion2013-07-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfMonthly Notices of the Royal Astronomical Society (July 21, 2013) 433 (1): 787-795.http://dx.doi.org/10.1093/mnras/stt773http://hdl.handle.net/11086/1656enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2025-09-29T13:42:27Zoai:rdu.unc.edu.ar:11086/1656Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722025-09-29 13:42:28.11Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse
dc.title.none.fl_str_mv Anisotropic halo model
title Anisotropic halo model
spellingShingle Anisotropic halo model
Sgró, Mario A.
Grupos de galaxias
Materia oscura
Estructura en gran escala
Galaxies: groups: general
Dark matter
Large-scale structure of universe
title_short Anisotropic halo model
title_full Anisotropic halo model
title_fullStr Anisotropic halo model
title_full_unstemmed Anisotropic halo model
title_sort Anisotropic halo model
dc.creator.none.fl_str_mv Sgró, Mario A.
Paz, Dante
Merchán, Manuel
author Sgró, Mario A.
author_facet Sgró, Mario A.
Paz, Dante
Merchán, Manuel
author_role author
author2 Paz, Dante
Merchán, Manuel
author2_role author
author
dc.subject.none.fl_str_mv Grupos de galaxias
Materia oscura
Estructura en gran escala
Galaxies: groups: general
Dark matter
Large-scale structure of universe
topic Grupos de galaxias
Materia oscura
Estructura en gran escala
Galaxies: groups: general
Dark matter
Large-scale structure of universe
dc.description.none.fl_txt_mv In the present work, we extend the classic halo model for the large-scale matter distribution including a triaxial model for the halo profiles and their alignments. In particular, we derive general expressions for the halo-matter cross correlation function. In addition, by numerical integration, we obtain instances of the cross-correlation function depending on the directions given by halo shape axes. These functions are called anisotropic cross-correlations. With the aim of comparing our theoretical results with the simulations, we compute averaged anisotropic correlations in cones with their symmetry axis along each shape direction of the centre halo. From these comparisons we characterise and quantify the alignment of dark matter haloes on the ΛCDM context by means of the presented anisotropic halo model. As our model requires multidimensional integral computation we implement a Monte Carlo method on GPU hardware which allows us to increase the precision of the results whereas it improves the performance of the computation.
publishedVersion
description In the present work, we extend the classic halo model for the large-scale matter distribution including a triaxial model for the halo profiles and their alignments. In particular, we derive general expressions for the halo-matter cross correlation function. In addition, by numerical integration, we obtain instances of the cross-correlation function depending on the directions given by halo shape axes. These functions are called anisotropic cross-correlations. With the aim of comparing our theoretical results with the simulations, we compute averaged anisotropic correlations in cones with their symmetry axis along each shape direction of the centre halo. From these comparisons we characterise and quantify the alignment of dark matter haloes on the ΛCDM context by means of the presented anisotropic halo model. As our model requires multidimensional integral computation we implement a Monte Carlo method on GPU hardware which allows us to increase the precision of the results whereas it improves the performance of the computation.
publishDate 2013
dc.date.none.fl_str_mv 2013-07-21
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 Monthly Notices of the Royal Astronomical Society (July 21, 2013) 433 (1): 787-795.
http://dx.doi.org/10.1093/mnras/stt773
http://hdl.handle.net/11086/1656
identifier_str_mv Monthly Notices of the Royal Astronomical Society (July 21, 2013) 433 (1): 787-795.
url http://dx.doi.org/10.1093/mnras/stt773
http://hdl.handle.net/11086/1656
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Digital Universitario (UNC)
instname:Universidad Nacional de Córdoba
instacron:UNC
reponame_str Repositorio Digital Universitario (UNC)
collection Repositorio Digital Universitario (UNC)
instname_str Universidad Nacional de Córdoba
instacron_str UNC
institution UNC
repository.name.fl_str_mv Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba
repository.mail.fl_str_mv oca.unc@gmail.com
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