Large-scale anisotropies on halo infall

Autores
Ceccarelli, Maria Laura; Paz, Dante Javier; Padilla, Nelson David; Garcia Lambas, Diego Rodolfo
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We perform a statistical analysis of the peculiar velocity field around darkmatter haloes in numerical simulations. We examine different properties of theinfall of material onto haloes and its relation to central halo shapes and theshape of the large scale surrounding regions (LSSR).We find that the amplitude of the infall velocity field along the halo shapeminor axis is larger than that along the major axis. This is consistent forgeneral triaxial haloes, and for both prolate and oblate systems. We alsoreport a strong anisotropy of the velocity field along the principal axes ofthe LSSR.The infall velocity field around dark matter haloes reaches a maximum valuealong the direction of the minor axis of the LSSR, whereas along the directionof its major axis, it exhibits the smallest velocities. We also analyse thedependence of the matter velocity field on the local environment. The amplitudeof the infall velocity at high local density regions is larger than at lowlocal density regions.  The velocity field tends to be more laminar along thedirection towards the minor axis of the LSSR, where the mean ratio between flowvelocity and velocity dispersion is of order unity and nearly constant up toscales of 15 Mpc h$^{-1}$.We also detect anisotropies in the outflowing component of the velocity field,showing a maximum amplitude along the surrounding LSSR major axis.
Fil: Ceccarelli, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Paz, Dante Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Materia
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: STATISTICAL
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:11336/278026
Acceder
id CONICETDig_7f8ee08768c8d55afdd81f8fc88811fa
oai_identifier_str oai:ri.conicet.gov.ar:11336/278026
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Large-scale anisotropies on halo infallCeccarelli, Maria LauraPaz, Dante JavierPadilla, Nelson DavidGarcia Lambas, Diego RodolfoLARGE-SCALE STRUCTURE OF UNIVERSEMETHODS: STATISTICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We perform a statistical analysis of the peculiar velocity field around darkmatter haloes in numerical simulations. We examine different properties of theinfall of material onto haloes and its relation to central halo shapes and theshape of the large scale surrounding regions (LSSR).We find that the amplitude of the infall velocity field along the halo shapeminor axis is larger than that along the major axis. This is consistent forgeneral triaxial haloes, and for both prolate and oblate systems. We alsoreport a strong anisotropy of the velocity field along the principal axes ofthe LSSR.The infall velocity field around dark matter haloes reaches a maximum valuealong the direction of the minor axis of the LSSR, whereas along the directionof its major axis, it exhibits the smallest velocities. We also analyse thedependence of the matter velocity field on the local environment. The amplitudeof the infall velocity at high local density regions is larger than at lowlocal density regions.  The velocity field tends to be more laminar along thedirection towards the minor axis of the LSSR, where the mean ratio between flowvelocity and velocity dispersion is of order unity and nearly constant up toscales of 15 Mpc h$^{-1}$.We also detect anisotropies in the outflowing component of the velocity field,showing a maximum amplitude along the surrounding LSSR major axis.Fil: Ceccarelli, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Paz, Dante Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaWiley Blackwell Publishing, Inc2011-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/278026Ceccarelli, Maria Laura; Paz, Dante Javier; Padilla, Nelson David; Garcia Lambas, Diego Rodolfo; Large-scale anisotropies on halo infall; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 412; 3; 4-2011; 1778-17860035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2010.18014.x/fullinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2010.18014.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 Técnicas2025-12-23T13:42:16Zoai:ri.conicet.gov.ar:11336/278026instacron: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:34982025-12-23 13:42:17.066CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Large-scale anisotropies on halo infall
title Large-scale anisotropies on halo infall
spellingShingle Large-scale anisotropies on halo infall
Ceccarelli, Maria Laura
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: STATISTICAL
title_short Large-scale anisotropies on halo infall
title_full Large-scale anisotropies on halo infall
title_fullStr Large-scale anisotropies on halo infall
title_full_unstemmed Large-scale anisotropies on halo infall
title_sort Large-scale anisotropies on halo infall
dc.creator.none.fl_str_mv Ceccarelli, Maria Laura
Paz, Dante Javier
Padilla, Nelson David
Garcia Lambas, Diego Rodolfo
author Ceccarelli, Maria Laura
author_facet Ceccarelli, Maria Laura
Paz, Dante Javier
Padilla, Nelson David
Garcia Lambas, Diego Rodolfo
author_role author
author2 Paz, Dante Javier
Padilla, Nelson David
Garcia Lambas, Diego Rodolfo
author2_role author
author
author
dc.subject.none.fl_str_mv LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: STATISTICAL
topic LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: STATISTICAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We perform a statistical analysis of the peculiar velocity field around darkmatter haloes in numerical simulations. We examine different properties of theinfall of material onto haloes and its relation to central halo shapes and theshape of the large scale surrounding regions (LSSR).We find that the amplitude of the infall velocity field along the halo shapeminor axis is larger than that along the major axis. This is consistent forgeneral triaxial haloes, and for both prolate and oblate systems. We alsoreport a strong anisotropy of the velocity field along the principal axes ofthe LSSR.The infall velocity field around dark matter haloes reaches a maximum valuealong the direction of the minor axis of the LSSR, whereas along the directionof its major axis, it exhibits the smallest velocities. We also analyse thedependence of the matter velocity field on the local environment. The amplitudeof the infall velocity at high local density regions is larger than at lowlocal density regions.  The velocity field tends to be more laminar along thedirection towards the minor axis of the LSSR, where the mean ratio between flowvelocity and velocity dispersion is of order unity and nearly constant up toscales of 15 Mpc h$^{-1}$.We also detect anisotropies in the outflowing component of the velocity field,showing a maximum amplitude along the surrounding LSSR major axis.
Fil: Ceccarelli, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Paz, Dante Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Garcia Lambas, Diego Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
description We perform a statistical analysis of the peculiar velocity field around darkmatter haloes in numerical simulations. We examine different properties of theinfall of material onto haloes and its relation to central halo shapes and theshape of the large scale surrounding regions (LSSR).We find that the amplitude of the infall velocity field along the halo shapeminor axis is larger than that along the major axis. This is consistent forgeneral triaxial haloes, and for both prolate and oblate systems. We alsoreport a strong anisotropy of the velocity field along the principal axes ofthe LSSR.The infall velocity field around dark matter haloes reaches a maximum valuealong the direction of the minor axis of the LSSR, whereas along the directionof its major axis, it exhibits the smallest velocities. We also analyse thedependence of the matter velocity field on the local environment. The amplitudeof the infall velocity at high local density regions is larger than at lowlocal density regions.  The velocity field tends to be more laminar along thedirection towards the minor axis of the LSSR, where the mean ratio between flowvelocity and velocity dispersion is of order unity and nearly constant up toscales of 15 Mpc h$^{-1}$.We also detect anisotropies in the outflowing component of the velocity field,showing a maximum amplitude along the surrounding LSSR major axis.
publishDate 2011
dc.date.none.fl_str_mv 2011-04
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/11336/278026
Ceccarelli, Maria Laura; Paz, Dante Javier; Padilla, Nelson David; Garcia Lambas, Diego Rodolfo; Large-scale anisotropies on halo infall; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 412; 3; 4-2011; 1778-1786
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/278026
identifier_str_mv Ceccarelli, Maria Laura; Paz, Dante Javier; Padilla, Nelson David; Garcia Lambas, Diego Rodolfo; Large-scale anisotropies on halo infall; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 412; 3; 4-2011; 1778-1786
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/http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2010.18014.x/full
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2010.18014.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
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_ 1852335330246524928
score 12.952241

Publicaciones similares