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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. ©2000 The American Physical Society.

Registro:

Documento: Artículo
Título:Best unbiased estimators for the three-point correlators of the cosmic microwave background radiation
Autor:Gangui, A.; Martin, J.
Filiación:Inst. Astronomia y Fis. del Espacio, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria-Pab. 1, 1428 Buenos Aires, Argentina
DARC, Observatoire de Paris-Meudon, UMR 8629 CNRS, 92195 Meudon Cedex, France
Año:2000
Volumen:62
Número:10
Página de inicio:1
Página de fin:17
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:05562821
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v62_n10_p1_Gangui

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Citas:

---------- APA ----------
Gangui, A. & Martin, J. (2000) . Best unbiased estimators for the three-point correlators of the cosmic microwave background radiation. Physical Review D - Particles, Fields, Gravitation and Cosmology, 62(10), 1-17.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v62_n10_p1_Gangui [ ]
---------- CHICAGO ----------
Gangui, A., Martin, J. "Best unbiased estimators for the three-point correlators of the cosmic microwave background radiation" . Physical Review D - Particles, Fields, Gravitation and Cosmology 62, no. 10 (2000) : 1-17.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v62_n10_p1_Gangui [ ]
---------- MLA ----------
Gangui, A., Martin, J. "Best unbiased estimators for the three-point correlators of the cosmic microwave background radiation" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 62, no. 10, 2000, pp. 1-17.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v62_n10_p1_Gangui [ ]
---------- VANCOUVER ----------
Gangui, A., Martin, J. Best unbiased estimators for the three-point correlators of the cosmic microwave background radiation. Phys Rev D Part Fields Gravit Cosmol. 2000;62(10):1-17.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v62_n10_p1_Gangui [ ]