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Measurement of the 3 K Cosmic Background Noise in the Far Infrared

Published online by Cambridge University Press:  04 August 2017

G. Dall'oglio
Affiliation:
Institute for Atmospheric Physics, CNR, Rome
P. de Bernardis
Affiliation:
Institute of Physics, Rome
S. Masi
Affiliation:
Institute of Physics, Rome
F. Melchiorri
Affiliation:
Institute of Physics, Rome

Abstract

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Quantum fluctuations of the cosmic background have been measured in the 900 to 2000 micron range (H.P.B.W.) by means of a balloon-borne correlator operating between 5 and 150 Hz. Preliminary results indicate an upper limit √<dP2> ≤ 2.1 × 10−17 watt/(cm2 srad Hz)1/2, corresponding to the noise of a blackbody at a temperature T ≤ 3.1 K at 1σ.

Type
Research Article
Copyright
Copyright © Reidel 1983