Artículo
Cosmic Microwave background bispectrum from Active Models of Structure Formation
Fecha de publicación:
12/2001
Editorial:
American Physical Society
Revista:
Physical Review D
ISSN:
0556-2821
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We propose a method for a numerical computation of the angular bispectrum of the cosmic microwave background (CMB) anisotropies arising from active models such as cosmic topological defects, using a modified Boltzmann code based on CMBFAST. The method does not use CMB sky maps and requires moderate computational power. As a first implementation, we apply our method to a recently proposed model of simulated cosmic strings and estimate the observability of the non-Gaussian bispectrum signal. A comparison with the cosmic variance of the bispectrum estimator shows that the bispectrum for the simulated string model we used is not observable.
Palabras clave:
Cosmic Microwave
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Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Citación
Gangui, Alejandro; Pogosian, Levon; Winitzki, Serge; Cosmic Microwave background bispectrum from Active Models of Structure Formation; American Physical Society; Physical Review D; 64; 4; 12-2001; 1-7; 043001
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