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dc.contributor.author
Gangui, Alejandro
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dc.contributor.author
Martin, Jérôme
dc.date.available
2017-07-20T18:37:18Z
dc.date.issued
2000-12
dc.identifier.citation
Gangui, Alejandro; Martin, Jérôme; Best Unbiased Estimators for the Three-Point Correlators of the Cosmic Microwave Background Radiation; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 62; 10; 12-2000; 1-17
dc.identifier.issn
1550-7998
dc.identifier.uri
http://hdl.handle.net/11336/21003
dc.description.abstract
Measuring the three-point correlators of the cosmic microwave background ~CMB! anisotropies could help to get a handle on the level of non-Gaussianity present in the observational data sets and therefore would strongly constrain models of the early Universe. However, typically, the expected non-Gaussian signal is very
small. Therefore, one has to face the problem of extracting it from the noise, in particular from the ‘‘cosmic variance’’ noise. For this purpose, one has to construct the best unbiased estimators for the three-point correlators that are needed for concrete detection of non-Gaussian features. In this article, we study this problem
for both the CMB third moment and the CMB angular bispectrum. We emphasize that knowledge of the best estimator for the former does not permit one to infer the best estimator for the latter and vice versa. We present the corresponding best unbiased estimators in both cases and compute their corresponding cosmic variances.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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
Best Unbiased Estimators for the Three-Point Correlators of the Cosmic Microwave Background Radiation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-20T13:08:47Z
dc.journal.volume
62
dc.journal.number
10
dc.journal.pagination
1-17
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Gangui, Alejandro. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Martin, Jérôme. Observatoire de Paris-Meudon; Francia
dc.journal.title
Physical Review D: Particles, Fields, Gravitation and Cosmology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/astro-ph/0001361
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevD.62.103004
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.62.103004
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