Analysis and application of a multi-beam radio astronomy survey

Astronomy and Astrophysics – Astronomy

Scientific paper

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Radio Astronomy, Radio Sources (Astronomy), Radio Telescopes, Computer Techniques, Radio Emission, Statistical Analysis

Scientific paper

A radio telescope was used to produce a confusion limited survey of one steradian of sky at 611 MHz; ten line feeds were used simultaneously in the meridian transit mode. The positions and flux densities of the 3012 radio sources stronger than 0.35 Janskys were measured. This thesis discusses the advantages of multiple-beam observations. The antenna, receivers, and data taking systems are described, and special calibration techniques are explained. The organization of the survey data on a single magnetic tape is outlined. An appendix includes standard computer programs developed to read the tape and to display the data. The survey data are used in two statistical analyses. First, the clustering of radio sources near classes of optical objects is investigated. Second, the very weak radio emission from classes of optical objects is estimated.

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