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 BOOMERANG 2003 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 BOOMERANG SZ 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.).

Veneziani, M., Amblard, A., Cooray, A., Piacentini, F., Pietrobon, D., Serra, P., et al. (2009). Subdegree Sunyaev-Zel'dovich Signal from Multifrequency BOOMERANG Observations. THE ASTROPHYSICAL JOURNAL, 702(1), L61-L65 [10.1088/0004-637X/702/1/L61].

Subdegree Sunyaev-Zel'dovich Signal from Multifrequency BOOMERANG Observations

CABELLA, PAOLO;DE GASPERIS, GIANCARLO;NATOLI, PAOLO;VITTORIO, NICOLA
2009

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 BOOMERANG 2003 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 BOOMERANG SZ 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.).
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/05 - Astronomia e Astrofisica
English
Con Impact Factor ISI
cosmic microwave background; cosmological parameters; cosmology: observations; large-scale structure of universe;
http://iopscience.iop.org/1538-4357/702/1/L61/
Veneziani, M., Amblard, A., Cooray, A., Piacentini, F., Pietrobon, D., Serra, P., et al. (2009). Subdegree Sunyaev-Zel'dovich Signal from Multifrequency BOOMERANG Observations. THE ASTROPHYSICAL JOURNAL, 702(1), L61-L65 [10.1088/0004-637X/702/1/L61].
Veneziani, M; Amblard, A; Cooray, A; Piacentini, F; Pietrobon, D; Serra, P; Ade, P; Bock, J; Bond, J; Borrill, J; Boscaleri, A; Cabella, P; Contaldi, C; Crill, B; de Bernardis, P; DE GASPERIS, G; de Oliveira Costa, A; Detroia, G; Di Stefano, G; Ganga, K; Hivon, E; Jones, W; Kisner, T; Lange, A; Mactavish, C; Masi, S; Mauskopf, P; Melchiorri, A; Montroy, T; Natoli, P; Netterfield, C; Pascale, E; Polenta, G; Ricciardi, S; Romeo, G; Ruhl, J; Santini, P; Tegmark, M; Vittorio, N
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/15644
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 8
social impact