Veneziani, M. and Amblard, A. and Cooray, A. and Piacentini, F. and Pietrobon, D. and Serra, P. and Ade, P. A. R. and Bock, J. J. and Bond, J. R. and Borrill, J. and Boscaleri, A. and Cabella, P. and Contaldi, C. R. and Crill, B. P. and de Bernardis, P. and De Gasperis, G. and de Oliveira-Costa, A. and De Troia, G. and di Stefano, G. and Ganga, K. M. and Hivon, E. and Jones, W. C. and Kisner, T. S. and Lange, A. E. and MacTavish, C. J. and Masi, S. and Mauskopf, P. D. and Melchiorri, A. and Montroy, T. E. and Natoli, P. and Netterfield, C. B. and Pascale, E. and Polenta, G. and Ricciardi, S. and Romeo, G. and Ruhl, J. E. and Santini, P. and Tegmark, M. and Vittorio, N. (2009) Subdegree Sunyaev-Zel'dovich Signal from Multifrequency BOOMERANG Observations. Astrophysical Journal Letters, 702 . L61-L65. ISSN 0004-637X http://resolver.caltech.edu/CaltechAUTHORS:20090910-142750424
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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 σ^(SZ)_8 < 1.14 at the 95% confidence level. When combined with other CMB anisotropy and SZ measurements, we find σ^(SZ)_8 < 0.92 (95% c.l.).
|Additional Information:||© 2009 American Astronomical Society. Print publication: Issue 1 (2009 September 1); received 2009 April 28; accepted for publication 2009 July 23; published 2009 August 14. We gratefully acknowledge support from NSF CAREER AST-0645427 at UCI. We also acknowledge support from the Italian Space Agency (contracts I/087/06/0 and I/016/ 07/0), and from Programma Nazionale Ricerche in Antartide. The authors acknowledge the use of the Planck Sky Model, developed by theComponent SeparationWorking Group (WG2) of the Planck Collaboration.|
|Subject Keywords:||cosmic microwave background; cosmological parameters; cosmology: observations; large-scale structure of universe|
|Official Citation:||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. Ganga, E. 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, and N. Vittorio 2009 ApJ 702 L61-L65 doi: 10.1088/0004-637X/702/1/L61|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||15 Sep 2009 17:30|
|Last Modified:||26 Dec 2012 11:21|
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