Ellipticity of large spots in CMB anisotropy maps

V. G. Gurzadyan, P. A R Ade, P. De Bernardis, C. L. Bianco, J. J. Bock, A. Boscaleri, B. P. Crill, G. De Troia, E. Hivon, V. V. Hristov, A. L. Kashin, H. Kuloghlian, S. Masi, Philip Mauskopf, T. Montroy, P. Natoli, E. Pascale, F. Piacentini, G. Polenta, G. Yegorian

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have measured the ellipticity of several degree scale anisotropies in the BOOMERanG maps of the Cosmic Microwave Background (CMB) at 150 GHz. The average ellipticity is around 2.6-2.7. The biases of the estimator of the ellipticity and for the noise are small in this case. Large spot elongation had been detected also for COBE-DMR and WMAP maps. If this effect is due to geodesic mixing, it would indicate a non-precisely zero curvature of the Universe which is among the discussed reasons of the WMAP low multipole anomaly.

Original languageEnglish (US)
Pages (from-to)491-498
Number of pages8
JournalModern Physics Letters A
Volume20
Issue number7
DOIs
StatePublished - Mar 7 2005
Externally publishedYes

Fingerprint

Ellipticity
ellipticity
Microwave
Anisotropy
microwaves
anisotropy
Cosmic Background Explorer satellite
Elongation
estimators
multipoles
elongation
Geodesic
Anomaly
universe
Curvature
curvature
anomalies
Estimator
Zero
Background

Keywords

  • Cosmic background radiation
  • Cosmology

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Nuclear and High Energy Physics

Cite this

Gurzadyan, V. G., Ade, P. A. R., De Bernardis, P., Bianco, C. L., Bock, J. J., Boscaleri, A., ... Yegorian, G. (2005). Ellipticity of large spots in CMB anisotropy maps. Modern Physics Letters A, 20(7), 491-498. https://doi.org/10.1142/S0217732305016658

Ellipticity of large spots in CMB anisotropy maps. / Gurzadyan, V. G.; Ade, P. A R; De Bernardis, P.; Bianco, C. L.; Bock, J. J.; Boscaleri, A.; Crill, B. P.; De Troia, G.; Hivon, E.; Hristov, V. V.; Kashin, A. L.; Kuloghlian, H.; Masi, S.; Mauskopf, Philip; Montroy, T.; Natoli, P.; Pascale, E.; Piacentini, F.; Polenta, G.; Yegorian, G.

In: Modern Physics Letters A, Vol. 20, No. 7, 07.03.2005, p. 491-498.

Research output: Contribution to journalArticle

Gurzadyan, VG, Ade, PAR, De Bernardis, P, Bianco, CL, Bock, JJ, Boscaleri, A, Crill, BP, De Troia, G, Hivon, E, Hristov, VV, Kashin, AL, Kuloghlian, H, Masi, S, Mauskopf, P, Montroy, T, Natoli, P, Pascale, E, Piacentini, F, Polenta, G & Yegorian, G 2005, 'Ellipticity of large spots in CMB anisotropy maps', Modern Physics Letters A, vol. 20, no. 7, pp. 491-498. https://doi.org/10.1142/S0217732305016658
Gurzadyan VG, Ade PAR, De Bernardis P, Bianco CL, Bock JJ, Boscaleri A et al. Ellipticity of large spots in CMB anisotropy maps. Modern Physics Letters A. 2005 Mar 7;20(7):491-498. https://doi.org/10.1142/S0217732305016658
Gurzadyan, V. G. ; Ade, P. A R ; De Bernardis, P. ; Bianco, C. L. ; Bock, J. J. ; Boscaleri, A. ; Crill, B. P. ; De Troia, G. ; Hivon, E. ; Hristov, V. V. ; Kashin, A. L. ; Kuloghlian, H. ; Masi, S. ; Mauskopf, Philip ; Montroy, T. ; Natoli, P. ; Pascale, E. ; Piacentini, F. ; Polenta, G. ; Yegorian, G. / Ellipticity of large spots in CMB anisotropy maps. In: Modern Physics Letters A. 2005 ; Vol. 20, No. 7. pp. 491-498.
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AU - De Bernardis, P.

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AU - Bock, J. J.

AU - Boscaleri, A.

AU - Crill, B. P.

AU - De Troia, G.

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AU - Hristov, V. V.

AU - Kashin, A. L.

AU - Kuloghlian, H.

AU - Masi, S.

AU - Mauskopf, Philip

AU - Montroy, T.

AU - Natoli, P.

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AU - Piacentini, F.

AU - Polenta, G.

AU - Yegorian, G.

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