Subdegree sunyaev-zel'dovich signal from multifrequency boomerang observations

M. Veneziani, A. Amblard, A. Cooray, F. Piacentini, D. Pietrobon, P. Serra, P. A.R. Ade, J. J. Bock, J. R. Bond, J. Borrill, A. Boscaleri, P. Cabella, C. R. Contaldi, B. P. Crill, P. De Bernardis, G. De Gasperis, A. De Oliveira-Costa, G. De Troia, G. Di Stefano, K. M. GangaE. Hivon, W. C. Jones, T. S. Kisner, A. E. Lange, C. J. MacTavish, S. Masi, P. D. Mauskopf, A. Melchiorri, T. E. Montroy, P. Natoli, C. B. Netterfield, E. Pascale, G. Polenta, S. Ricciardi, G. Romeo, J. E. Ruhl, P. Santini, M. Tegmark, N. Vittorio

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

The Sunyaev-Zel'dovich (SZ) effect is the inverse Compton-scattering of cosmic microwave background (CMB) photons by hot electrons in the intervening gas throughout the universe. The effect has a distinct spectral signature that allows its separation from other signals in multifrequency CMB data sets. Using CMB anisotropies measured at three frequencies by the BOOMERANG2003 flight we constrain SZ fluctuations in the 10 arcmin to 1 deg angular range. Propagating errors and potential systematic effects through simulations, we obtain an overall upper limit of 15.3 μK (2σ) for rms SZ fluctuations in a broad bin between multipoles of 250 and 1200 at the Rayleigh-Jeans (RJ) end of the spectrum. The resulting upper limit on the local universe normalization of the density perturbations with BOOMERANGSZ data alone is σSZ 8 < 1.14 at the 95% confidence level. When combined with other CMB anisotropy and SZ measurements, we find σSZ 8 < 0.92 (95% c.l.).

Original languageEnglish (US)
Pages (from-to)L61-L65
JournalAstrophysical Journal
Volume702
Issue number1 PART 2
DOIs
StatePublished - Jan 1 2009

Keywords

  • Cosmic microwave background
  • Cosmological parameters
  • Cosmology: observations
  • Large-scale structure of universe

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Veneziani, M., Amblard, A., Cooray, A., Piacentini, F., Pietrobon, D., Serra, P., Ade, P. A. R., Bock, J. J., Bond, J. R., Borrill, J., Boscaleri, A., Cabella, P., Contaldi, C. R., Crill, B. P., De Bernardis, P., De Gasperis, G., De Oliveira-Costa, A., De Troia, G., Di Stefano, G., ... Vittorio, N. (2009). Subdegree sunyaev-zel'dovich signal from multifrequency boomerang observations. Astrophysical Journal, 702(1 PART 2), L61-L65. https://doi.org/10.1088/0004-637X/702/1/L61