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Large-Scale Anisotropy at Centimeter Wavelengths

Published online by Cambridge University Press:  04 August 2017

David T. Wilkinson
David T. Wilkinson*
Affiliation:
Joseph Henry Laboratories, Physics Department, Princeton University, Princeton, N. J. 08544, U.S.A.

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Scientific interest in large-scale anisotropy measurements is now focused on intrinsic effects, which could tell us much about the early Universe. Current experimental precision of better than 10−4 K begins to probe for interesting physical processes. However, at these levels of precision systematic effects and foreground sources present serious difficulties. Some recent results from balloon flights of a maser radiometer (λ 1.2 cm) and a cooled mixer (λ 3 mm) are discussed and interpreted. The dipole effect gives a velocity for the Local Group in the general direction of the Virgo cluster. The Earth's motion is clearly seen. There is no quadrupole detected at a level of ΔT/T ∼ 5 × 10−5.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 104: Early Evolution of the Universe and Its Present Structure , 1983 , pp. 143 - 148
Copyright
Copyright © Reidel 1983 

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