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A measurement at the first acoustic peak of the CMB with the 33 GHz interferometer

D. L. Harrison·J. A. Rubino-Martin·S. J. Melhuish·R. A. Watson·R. D. Davies·R. Rebolo·R. J. Davis·C. M. Gutierrez·J. F. Macias-Perez
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Abstract

This paper presents the results from the Jodrell Bank-IAC two-element 33 GHz interferometer operated with an element separation of 32.9 wavelengths and hence sensitive to 1 deg scale structure on the sky. The level of CMB fluctuations, assuming a flat CMB spatial power spectrum over the range of multipoles l = 208 +- 18, was found using a likelihood analysis to be ΔT_l = 63^{+7}_{-6} mu K at the 68% confidence limit, after the subtraction of the contribution of monitored point sources. Other possible foreground contributions have been assessed and are expected to have negligible impact on this result.

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D. L. Harrison, J. A. Rubino-Martin, S. J. Melhuish, R. A. Watson, R. D. Davies, R. Rebolo, R. J. Davis, C. M. Gutierrez, J. F. Macias-Perez. 2000-06-14. A measurement at the first acoustic peak of the CMB with the 33 GHz interferometer. https://doi.org/10.1046/j.1365-8711.2000.03762.x

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