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Measurement of Arcminute Scale Cosmic Microwave Background Anisotropy with the BIMA ArrayWe report the results of our continued study of arcminute scale anisotropy in the Cosmic Microwave Background (CMB) with the Berkeley-Illinois-Maryland Association (BIMA) array. The survey consists of ten independent fields selected for low infrared dust emission and lack of bright radio point sources. With observations from the VLA (Very Large Array) at 4.8 GHz, we have identified point sources which could act as contaminants in estimates of the CMB power spectrum and removed them in the analysis. Modeling the observed power spectrum with a single. flat band power with average multipole of l(sub eff) = 6864, we find Delta T = 14.2((sup +4.8)(sub -6.0)) micro K at 68% confidence. The signal in the visibility data exceeds the expected contribution from instrumental noise with 96.5% confidence. We have also divided the data into two bins corresponding to different spatial resolutions in the power spectrum. We find Delta T(sub 1) = 16.6((sup +5.3)(sub -5.9)) micro K at 68% confidence for CMB flat band power described by an average multipole of l(sub eff) = 5237 and Delta T(sub 2) is less than 26.5 micro K at 95% confidence for l(sub eff) = 8748.
Document ID
Document Type
Preprint (Draft being sent to journal)
Dawson, K. S.
(California Univ. Berkeley, CA United States)
Holzapfel, W. L.
(California Univ. Berkeley, CA United States)
Carlstrom, J. E.
(Chicago Univ. Chicago, IL United States)
Joy, M.
(NASA Marshall Space Flight Center Huntsville, AL United States)
LaRoque, S. J.
(Chicago Univ. Chicago, IL United States)
Miller, A.
(Chicago Univ. Chicago, IL United States)
Nagai, D.
(Chicago Univ. Chicago, IL United States)
Six, N. Frank
Date Acquired
August 20, 2013
Publication Date
January 1, 2002
Subject Category
Space Radiation
Report/Patent Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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