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An interferometric study of Jupiter's decimeter radio emission

Citation

Berge, Glenn LeRoy (1965) An interferometric study of Jupiter's decimeter radio emission. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-09122002-090152

Abstract

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An interferometric study of the decimeter radio emission from the planet Jupiter has recently been carried out at the Owens Valley Radio Observatory. Using the two 90-foot paraboloids as an interference polarimeter, observations have been made with various eastwest spacings ranging from 300 to [.......] at 10.4 cm. and 300 to [......] at 21.2 cm. and also with some critical north-south spacings at 10.4 cm.

The visibility functions obtained are consistent with earlier measurements, which gave the polar and equatorial dimensions as one and three planetary diameters respectively, but they are more complete and extend to larger baselines. They permit the fitting of a rather detailed model for the decimeter brightness distribution. The observations are consistent with a symmetrical synchrotron emission source having the polarization properties one would expect with a dipole magnetic field. It probably is centered quite closely on the planetary disk, which is itself seen as a thermal radio source.

The observations also indicate the presence of a small circularly polarized component in the radiation which varies in magnitude and sense as Jupiter rotates. Another result is that the disk emission at 10.4 cm. is about twice the thermal emission one would expect for a temperature of 130 [degrees] K.

The implications of the various results are discussed.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Astronomy
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Stanley, Gordon J.
Thesis Committee:
  • Unknown, Unknown
Defense Date:30 April 1965
Record Number:CaltechETD:etd-09122002-090152
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-09122002-090152
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3479
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:13 Sep 2002
Last Modified:26 Dec 2012 03:00

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