Navegar

Colección

Datos Estadísticas

Artículo

El editor solo permite decargar el artículo en su versión post-print desde el repositorio. Por favor, si usted posee dicha versión, enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

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. © 2001 The American Physical Society.

Registro:

Documento: Artículo
Título:Cosmic microwave background bispectrum from active models of structure formation
Autor:Gangui, A.; Winitzki, S.
Filiación:Instituto de Astronomía y Física del Espacio, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Physics Department, Case Western Reserve University, Cleveland, OH, 44106-7079, United States
Año:2001
Volumen:64
Número:4
Página de inicio:7
DOI: http://dx.doi.org/10.1103/PhysRevD.64.043001
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v64_n4_p7_Gangui

Referencias:

  • de Bernardis, P., (2000) Nature (London), 404, p. 995
  • Netterfield, C.B., astro-ph/0104460; Jaffe, A.H., (2001) Phys. Rev. Lett., 86, p. 3475
  • Lee, A.T., astro-ph/0104459; Halverson, N.W., astro-ph/0104489; Magueijo, J., Albrecht, A., Ferreira, P., Coulson, D., (1996) Phys. Rev. D, 54, p. 3727
  • Gangui, A., Lucchin, F., Matarrese, S., Mollerach, S., (1994) Astrophys. J., 430, p. 447
  • Vilenkin, A., Shellard, E.P.S., (2000) Cosmic Strings and Other Topological Defects, , Cambridge University Press, Cambridge, England
  • Gangui, A., (2001) Science, 291, p. 837
  • Avelino, P.P., Martins, C.J.A.P., (2000) Phys. Rev. Lett., 85, p. 1370
  • Contaldi, C., Hindmarsh, M., Magueijo, J., (1999) Phys. Rev. Lett., 82, p. 2034
  • Battye, R., Weller, J., (2000) Phys. Rev. D, 61, p. 43501
  • Bouchet, F.R., Peter, P., Riazuelo, A., Sakellariadou, M., astro-ph/0005022; Luo, X., (1994) Astrophys. J. Lett., 427, p. L71
  • Heavens, A.F., (1998) Mon. Not. R. Astron. Soc., 299, p. 805
  • Spergel, D., Goldberg, D., (1999) Phys. Rev. D, 59, p. 103001
  • Goldberg, D., Spergel, D., (1999) Phys. Rev. D, 59, p. 103002
  • Magueijo, J., (2000) Astrophys. J. Lett., 528, p. L57
  • Verde, L., Wang, L., Heavens, A.F., Kamionkowski, M., (2000) Mon. Not. R. Astron. Soc., 313, p. L141
  • Cooray, A., Hu, W., (2000) Astrophys. J., 534, p. 533
  • Gangui, A., Martin, J., (2000) Mon. Not. R. Astron. Soc., 313, p. 323
  • Seljak, U., Zaldarriaga, M., (1996) Astrophys. J., 469, p. 437
  • Albrecht, A., Battye, R., Robinson, J., (1997) Phys. Rev. Lett., 79, p. 4736
  • Albrecht, A., Battye, R., Robinson, J., (1999) Phys. Rev. D, 59, p. 23508
  • Pogosian, L., Vachaspati, T., (1999) Phys. Rev. D, 60, p. 83504
  • Pogosian, L., astro-ph/0009307; Komatsu, E., Spergel, D., (2001) Phys. Rev. D, 63, p. 63002
  • Wang, L., Kamionkowski, M., (2000) Phys. Rev. D, 61, p. 63504
  • Gangui, A., Martin, J., (2000) Phys. Rev. D, 62, p. 103004
  • Scaramella, R., Vittorio, N., (1991) Astrophys. J., 375, p. 439
  • Srednicki, M., (1993) Astrophys. J. Lett., 416, p. L1
  • Martins, C.J.A.P., Shellard, E.P.S., (1996) Phys. Rev. D, 54, p. 2535
  • Turok, N., Seljak, U., (1998) Phys. Rev. D, 58, p. 23506
  • Durrer, R., Gangui, A., Sakellariadou, M., (1996) Phys. Rev. Lett., 76, p. 579
  • Avelino, P.P., Shellard, E.P.S., Wu, J.H.P., Allen, B., (1998) Astrophys. J. Lett., 507, p. L101
  • Martins, C.J.A.P., ; Wu, J.-H.P., astro-ph/9812156; Kaiser, N., Stebbins, A., (1984) Nature (London), 310, p. 391
  • Benabed, K., Bernardeau, F., (2000) Phys. Rev. D, 61, p. 123510
  • The numerical code employed here will be made publicly available shortly

Citas:

---------- APA ----------
Gangui, A. & Winitzki, S. (2001) . Cosmic microwave background bispectrum from active models of structure formation. Physical Review D - Particles, Fields, Gravitation and Cosmology, 64(4), 7.
http://dx.doi.org/10.1103/PhysRevD.64.043001
---------- CHICAGO ----------
Gangui, A., Winitzki, S. "Cosmic microwave background bispectrum from active models of structure formation" . Physical Review D - Particles, Fields, Gravitation and Cosmology 64, no. 4 (2001) : 7.
http://dx.doi.org/10.1103/PhysRevD.64.043001
---------- MLA ----------
Gangui, A., Winitzki, S. "Cosmic microwave background bispectrum from active models of structure formation" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 64, no. 4, 2001, pp. 7.
http://dx.doi.org/10.1103/PhysRevD.64.043001
---------- VANCOUVER ----------
Gangui, A., Winitzki, S. Cosmic microwave background bispectrum from active models of structure formation. Phys Rev D Part Fields Gravit Cosmol. 2001;64(4):7.
http://dx.doi.org/10.1103/PhysRevD.64.043001