Constraints on the non-linear coupling parameter fnl with Archeops data

[Aims] We present a Gaussianity analysis of the Archeops Cosmic Microwave Background (CMB) temperature anisotropy data maps at high resolution to constrain the non-linear coupling parameter fnl characterising well motivated non-Gaussian CMB models. We used the data collected by the most sensitive Ar...

Descripción completa

Detalles Bibliográficos
Autores: Curto, Andrés, Macías-Pérez, J. F., Martínez-González, Enrique, Barreiro, R. Belén, Santos, J. D., Hansen, F. K., Liguori, Michele, Matarrese, S.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/385778
Acceso en línea:http://hdl.handle.net/10261/385778
Access Level:acceso abierto
Palabra clave:Cosmology: observations
Cosmology: cosmic microwave background
Methods: data analysis
id ES_9183bd8d635e6f2d3bf967c25d2e5bbd
oai_identifier_str oai:digital.csic.es:10261/385778
network_acronym_str ES
network_name_str España
repository_id_str
spelling Constraints on the non-linear coupling parameter fnl with Archeops dataCurto, AndrésMacías-Pérez, J. F.Martínez-González, EnriqueBarreiro, R. BelénSantos, J. D.Hansen, F. K.Liguori, MicheleMatarrese, S.Cosmology: observationsCosmology: cosmic microwave backgroundMethods: data analysis[Aims] We present a Gaussianity analysis of the Archeops Cosmic Microwave Background (CMB) temperature anisotropy data maps at high resolution to constrain the non-linear coupling parameter fnl characterising well motivated non-Gaussian CMB models. We used the data collected by the most sensitive Archeops bolometer at 143 GHz. The instrumental noise was carefully characterised for this bolometer, and for another Archeops bolometer at 143 GHz used for comparison. Angular scales from 27 arcmin to 1.8 degrees and a large fraction of the sky, 21%, covering both hemispheres (avoiding pixels with Galactic latitude |b| < 15 degrees) were considered.[Methods] The three Minkowski functionals on the sphere evaluated at different thresholds were used to construct a χ2 statistics for both the Gaussian and the non-Gaussian CMB models. The Archeops maps were produced with the Mirage optimal map-making procedure from processed time ordered data. The analysis is based on simulations of signal (Gaussian and non-Gaussian fnl CMB models) and noise which were processed in the time domain using the Archeops pipeline and projected on the sky using the Mirage optimal map-making procedure.[Results] The Archeops data were found to be compatible with Gaussianity after removal of highly noisy pixels at high resolution. The non-linear coupling parameter was constrained to fnl = 70+590 −400 at 68% CL and fnl = 70+1075−920 at 95% CL, for realistic non-Gaussian CMB simulations.We acknowledge partial financial support from the Spanish Ministerio de Educación y Ciencia (MEC) project AYA2007-68058-C03-02. A.C. thanks the Spanish Ministerio de Educación y Ciencia (MEC) for a pre-doctoral FPI fellowship. S.M. thanks ASI contract I/016/07/0 “COFIS” and ASI contract Planck LFI activity of Phase E2 for partial financial support.Peer reviewedEDP SciencesMinisterio de Educación y Ciencia (España)Agenzia Spaziale ItalianaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/385778reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1051/0004-6361:200809880Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3857782026-05-22T06:33:51Z
dc.title.none.fl_str_mv Constraints on the non-linear coupling parameter fnl with Archeops data
title Constraints on the non-linear coupling parameter fnl with Archeops data
spellingShingle Constraints on the non-linear coupling parameter fnl with Archeops data
Curto, Andrés
Cosmology: observations
Cosmology: cosmic microwave background
Methods: data analysis
title_short Constraints on the non-linear coupling parameter fnl with Archeops data
title_full Constraints on the non-linear coupling parameter fnl with Archeops data
title_fullStr Constraints on the non-linear coupling parameter fnl with Archeops data
title_full_unstemmed Constraints on the non-linear coupling parameter fnl with Archeops data
title_sort Constraints on the non-linear coupling parameter fnl with Archeops data
dc.creator.none.fl_str_mv Curto, Andrés
Macías-Pérez, J. F.
Martínez-González, Enrique
Barreiro, R. Belén
Santos, J. D.
Hansen, F. K.
Liguori, Michele
Matarrese, S.
author Curto, Andrés
author_facet Curto, Andrés
Macías-Pérez, J. F.
Martínez-González, Enrique
Barreiro, R. Belén
Santos, J. D.
Hansen, F. K.
Liguori, Michele
Matarrese, S.
author_role author
author2 Macías-Pérez, J. F.
Martínez-González, Enrique
Barreiro, R. Belén
Santos, J. D.
Hansen, F. K.
Liguori, Michele
Matarrese, S.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Educación y Ciencia (España)
Agenzia Spaziale Italiana
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Cosmology: observations
Cosmology: cosmic microwave background
Methods: data analysis
topic Cosmology: observations
Cosmology: cosmic microwave background
Methods: data analysis
description [Aims] We present a Gaussianity analysis of the Archeops Cosmic Microwave Background (CMB) temperature anisotropy data maps at high resolution to constrain the non-linear coupling parameter fnl characterising well motivated non-Gaussian CMB models. We used the data collected by the most sensitive Archeops bolometer at 143 GHz. The instrumental noise was carefully characterised for this bolometer, and for another Archeops bolometer at 143 GHz used for comparison. Angular scales from 27 arcmin to 1.8 degrees and a large fraction of the sky, 21%, covering both hemispheres (avoiding pixels with Galactic latitude |b| < 15 degrees) were considered.
publishDate 2008
dc.date.none.fl_str_mv 2008
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/385778
url http://hdl.handle.net/10261/385778
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1051/0004-6361:200809880
Sí
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.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869413396650131456
score 15.811543

Similares en LA Referencia