Mathematics – Probability
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.3402g&link_type=abstract
American Astronomical Society, 188th AAS Meeting, #34.02; Bulletin of the American Astronomical Society, Vol. 28, p.870
Mathematics
Probability
Scientific paper
In this paper we present results of a study of over 30 years of Jovian decameter--wavelength observations from the University of Florida Radio Observatory and the Maipu Radio Astronomy Observatory in Chile. The occurrence probability per apparition of Jovian decametric radiation observed from Earth undergoes a cyclic variation. This variation is strongly correlated with the Jovicentric declination of the Earth (DE) which has a period of 12 years. Over the 7 degree range of DE the yearly averaged occurrence probability for the non Io related A source can vary by over a factor of ten. We suggest that the DE control is a geometrical effect resulting from the sharp lower edge of an emission beam that corotates with the source. The Earth remains just outside the beam for the most negative values of DE but not for the more positive ones. We are using a rotating emission beam model to generate synthetic probability histograms in order to determine whether the observed DE effect can be explained by this simple model.
Carr Thomas D.
Garcia Nancy L.
Higgins Charles A.
Reyes Francisco
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