Possible Continuum Emission from Jupiter at 18 Mc/sec.

Abstract

view Abstract Citations References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Possible Continuum Emission from Jupiter at 18 Mc/sec. Barrow, C. H. ; Williams, J. Abstract Observations of Jupiter have been made with an interferometer consisting of two identical broadside arrays, each of four whole-wave dipoles, on an east-west baseline of 16 wavelengths. The beam of each array was centered on the zenith and had half-power points at about + 130 in the north- south direction and + 250 in the east-west direction. The receiver was phase switched with variable time constant and bandwidth. Some typical records are presented. In some of these the conventional Jupiter bursts appear superimposed on a fringe envelope while in others the pen returns to the zero-centered baseline between bursts of activity. The over-all time characteristics of the instrument were such that the pen should readily have returned to the center zero between bursts had the incident radiation from Jupiter gone to zero for periods of more than a few seconds. It is suggested that the former type of record indicates the presence of some weak background continuum radiation of intensity less than about 10-21 W m-2 (cps)-1. This effect was not observed on many occasions and presumably indicates either that continuum emission is not a frequent occurrence or that it is usually of too low an intensity to be recorded by the interferometer. The research is supported by the National Aeronautics and Space Adminstration Grant number NSG-224-61 Publication: The Astronomical Journal Pub Date: 1967 DOI: 10.1086/110424 Bibcode: 1967AJ.....72Q.785B full text sources ADS |