A Measurement of Excess Antenna Temperature at 4080 Mc/s. (original) (raw)

ADS

Abstract

Measurements of the effective zenith noise temperature of the 20-foot horn-reflector antenna (Crawford, Hogg, and Hunt 1961) at the Crawford Hill Laboratory, Holmdel, New Jersey, at 4080 Mc/s have yielded a value of about 3.5 K higher than expected. This excess temperature is, within the limits of our observations, isotropic, unpolarized, and free from seasonal variations (July, 1964 - April, 1965). A possible explanation for the observed excess noise temperature is the one given by Dicke, Peebles, Roll, and Wilkinson (1965) in a companion letter in this issue.

Publication:

The Astrophysical Journal

Pub Date:

July 1965

DOI:

10.1086/148307

Bibcode:

1965ApJ...142..419P

Keywords: