Small-scale isotropy of the cosmic microwave background at 19.5 GHz

Details Small-scale isotropy of the cosmic microwave background at 19.5 GHz Small-scale isotropy of the cosmic microwave background at 19.5 GHz

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..471u&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 15, 1984, p. 471-478. NSF-supported research.

Astronomy and Astrophysics

Astronomy

55

Instrument Compensation, Microwave Spectra, Radio Astronomy, Radio Telescopes, Relic Radiation, Angular Distribution, Atmospheric Correction, Beam Switching, Drift (Instrumentation), Error Analysis, Isotropy, Masers, Noise Temperature

Scientific paper

The cosmic microwave background represents a remnant of the early universe. For this reason, observations of the small-scale structure of this radiation can provide important information regarding the development of the universe. Studies have, therefore, been conducted regarding the connection between the anisotropies in the matter distribution and the background radiation. In studies involving the small-scale isotropy of the cosmic microwave background, observations of great sensitivity are required, and it is crucial to estimate accurately all possible contributions of systematic errors. In the present investigation, the performance of the employed 140-foot (43 m) telescope is examined in detail. It had been recognized that this telescope could be used, in principle, to improve existing measurements of the microwave background at angular scales of a few arcminutes. Key questions were related to variable ground pickup and noise from atmospheric fluctuations.

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