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Early results from the MIT millimeter and sub-millimeter balloon-borne anisotropy measurementThe MIT balloon-borne bolometric search for Cosmic Microwave Background Radiation (CMBR) anisotropies places the most stringent constraints to date on fluctuations in the CMBR. Four maps of half of the Northern Hemisphere at 1.8, 1.1, 0.63 and 0.44 mm wavelength, have a beam size of 3.8 deg with a 1 sigma sensitivity of less than 0.1 mK (thermodynamic) per FOV in each of the first two channels. Analysis of the sky map at 1.8 mm wavelength using a likelihood ratio test for galactic latitudes of 15 deg and greater yields a 95 percent confidence level (CL) upper limit on fluctuations of the CMBR at DeltaT/T less than or equal to 1.6 x 10 exp -5 with a statistical power of 92 percent for Gaussian fluctuations at a correlation angle of 13 deg. Between 3 deg and 22 deg, the upper limit for fluctuations is DeltaT/T less than or equal to 4.0 x 10 exp -5 (95 percent CL).
Document ID
19930039617
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Meyer, Stephan S.
(MIT Cambridge, MA, United States)
Cheng, Edward S.
(MIT, Cambridge, MA; NASA, Goddard Space Flight Center Greenbelt, MD, United States)
Page, Lyman A.
(MIT Cambridge, MA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: After the first three minutes; Proceedings of the 1st Astrophysics Workshop, Univ. of Maryland, College Park, Oct. 15-17, 1990 (A93-23605 07-90)
Publisher: American Institute of Physics
Subject Category
Space Radiation
Accession Number
93A23614
Funding Number(s)
CONTRACT_GRANT: NAGW-1841
Distribution Limits
Public
Copyright
Other

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