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Subdegree Sunyaev-Zel'dovich Signal from Multifrequency BOOMERanG observations
Author(s)
Language
English
Obiettivo Specifico
5IT. Osservazioni satellitari
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
1/702 (2010)
Pages (printed)
L61-L65
Issued date
2010
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 datasets. 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 (2sigma) 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 sigma_sz_8 < 1.14 at the 95% confidence level. When combined with other CMB anisotropy and SZ measurements, we find sigma_SZ_8 < 0.92 (95% c.l.).
Sponsors
NSF CAREER AST-0645427 at UCI
Italian Space Agency (contracts I/087/06/0 and I/016/07/0)
Programma Nazionale di Ricerche in Antartide
Italian Space Agency (contracts I/087/06/0 and I/016/07/0)
Programma Nazionale di Ricerche in Antartide
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Cooray, A. & Sheth, R. 2002, Phys. Rep., 372, 1
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de Zotti, G., et al. 2005, A&A, 431, 893
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Komatsu, E. & Seljak, U., 2002, MNRAS, 336, 1256
Komatsu, E. et al., 2009, ApJS, 180, 330
Leach, S. M., et al. 2008, A&A, 491, 597
Lewis, A. & Bridle, S., 2002, PRD, 66, 103511
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Molnar, S. & Birkinshaw, M. 2000, ApJ, 537, 542
Oh, S.-P., Cooray, A. & Kamionkowski, 2003, MNRAS, 342, L20
Reichardt, C. L. et al., 2008, ApJ, 694, 1200
Sadeh, S. & Rephaeli, Y. 2004, NA, 9, 373
Sayers, J. et al., 2008, ApJ, 690, 1597
Seljak, U., Burwell, J. & Pen, Ue-Li, 2001, Phys. Rev. D, 63, 063001
Sharp, M. K. et al., 2009, ApJ, submitted
(arXiv:0901.4342)
Sievers, J. L. et al., 2009, arXiv:0901.4540
Springel, V., White, M. & Hernquist, L., 2001, ApJ, 549, 681
Sunyaev, R. A. & Zeldovich, Ya. B., 1972, Comments Astrophys. Space
Phys., 4, 173
Tegmark, M., de Oliveira-Costa A., Hamilton A., 2003, Phys. Rev. D, 68,
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Tegmark, M. & Efstathiou, G., 1996, MNRAS, 281, 1297
White, M., 2003, ApJ, 597, 650
Type
article
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