Observations of Jupiter at a Frequency of 610.5 MHz.

Abstract

view Abstract Citations (1) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Observations of Jupiter at a Frequency of 610.5 MHz. Dickel, John R. Abstract A total of 37 measurements of Jupiter have been made at a frequency of 610.5 MHz with the 400-ft radio telescope at the Vermilion River Observatory of the University of Illinois. The results give a mean flux density for the planet of 5.2 ~ 1.0 flux units [1 0~26 W m-2 (Hz)-1i for a normalized distance to Jupiter of 4.04 a.u. The telescope receives left-hand circular polarization so that the radiation recorded will not include possible right-hand circularly polarized components which may be generated in the Jovian magnetosphere. The radiation appears to vary by almost 25 % with the rotation of Jupiter. The intensity reaches its minimum value when the magnetic pole in the noril~ern hemisphere, at about x111=2000, lies on the central meridian. This variation is consistent with the beaming of the radiation into il~e plane of Jupiter's magnetic equator. The results can be combined with other measurements in order to determine the spectrum of the radiation and the physical properties of the Jovian magnetosphere. This research was sponsored by the Office of Naval Research under contract XONR 1834(22). Publication: The Astronomical Journal Pub Date: February 1966 DOI: 10.1086/110069 Bibcode: 1966AJ.....71R.159D full text sources ADS |