Control of Jovian radio emission by Ganymede

Menietti, J. D.; Gurnett, D. A.; Kŭrth, W. S.; Groene, J. B.

doi:10.1029/1998gl900112

Cited by 23 publications

(28 citation statements)

References 22 publications

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“…Confirmation of the physical origin of these peaks comes from the fact that, when the contents of the white boxes of Figures 4a,b is plotted versus the longitude of Ganymede Λ Ga , they gather in a single broad region in Λ Ga (Figure 4e) that coincides with the higher half of the distributions of Io emissions versus Λ Io (Figure 2c). The peaks in Figures 4c and 4d match the maxima found in Galileo data by Menietti et al [1998] and Hospodarsky et al [2001], but they have a much better signal-to-noise ratio and characterize in greater details the occurrence of the emission, as further illustrated by Figures 4a,b. Also, emission events attributed to the Ganymede-Jupiter interaction are individually identified, allowing us to study their dynamic spectrum, polarization, hemisphere and limb of origin, and compare them to magnetic field models [e.g.…”

Section: Ganymedesupporting

confidence: 70%

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Radio emission from satellite-Jupiter interactions (especially Ganymede)

Zarka¹,

Marques²,

Louis³

et al. 2018

Planetary Radio Emissions Viii

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Analyzing a database of 26 years of observations of Jupiter from the Nançay Decameter Array, we study the occurrence of Io-independent emissions as a function of the orbital phase of the other Galilean satellites and Amalthea. We identify unambiguously the emissions induced by Ganymede and characterize their intervals of occurrence in CML and Ganymede phase and longitude. We also find hints of emissions induced by Europa and, surprisingly, by Amalthea. The signature of Callisto-induced emissions is more tenuous.

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Section: Ganymedesupporting

confidence: 70%

“…It shows up as a nearly sinusoidal modulation of occurrence as a function of Φ Ga (the orbital phase of Ganymede), but is very difficult to identify as regions of the (CML, Φ Ga ) diagram [Menietti et al, 1998;Hospodarsky et al, 2001].…”

Section: Ganymedementioning

confidence: 99%

Radio emission from satellite-Jupiter interactions (especially Ganymede)

Zarka¹,

Marques²,

Louis³

et al. 2018

Planetary Radio Emissions Viii

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“…Recent papers have shown that in addition to Io, the satellites Callisto, Ganymede, and Europa show a measurable influence on Jupiter's low‐frequency decametric radio emission [ Menietti et al , 1998, 2001; Higgins et al , 2006]. The influence of Io's orbital position on Jupiter's radio emission has long been known [ Bigg , 1964].…”

Section: Introductionmentioning

confidence: 99%

Satellite control of Jovian 2–6 MHz radio emission using Voyager data

Higgins

2007

J. Geophys. Res.

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[1] Jupiter's satellite Io no longer has the only known effect in controlling the lowfrequency Jovian radio emissions. Menietti et al. (1998Menietti et al. ( , 2001) used a long and contiguous set of data in the range of 2.0-5.6 MHz from the Galileo spacecraft and found correlations with the orbital phase of Ganymede and Callisto. Recently, Higgins et al. (2006) used all of the Galileo orbiter data and found that Europa's phase shows a minor but statistically significant effect on the lower range of decametric emissions. In this paper, results are found that confirm previous work for all four Galilean satellites by combining Voyager 1 and Voyager 2 flyby data in the frequency range of 2.1-5.8 MHz. The data were analyzed using the unique occurrence probability data compilation technique that includes 10-hour averaging and satellite bias removal. A statistical significance Z-test was computed to compare sample populations for each enhanced region of occurrence against the background. We find significance values greater than the 95% confidence level (Z > 2s) for Io, Europa, Ganymede, and Callisto. Least squares fits to histograms of relative occurrence probability also show similar results. The cause of these correlations is believed to be Alfvénic interactions between the individual satellite and Jupiter.

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“…Europa, Ganymede and Callisto also control jovian decametric radiation, although to a lesser degree than Io (Menietti et al 1998(Menietti et al , 2001, and Ganymede and Europa also cast auroral footprints. The unipolar inductor model is also applicable to systems where Jupiter is replaced by a magnetic white dwarf.…”

Section: Introductionmentioning

confidence: 99%

Radio emissions from terrestrial planets around white dwarfs

Willes

2005

A&A

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Abstract. Terrestrial planets in close orbits around magnetic white dwarf stars are potential electron-cyclotron maser sources, by analogy to planetary radio emissions generated from the electrodynamic interaction between Jupiter and the Galilean moons. We present predictions of radio flux densities and the number of detectable white-dwarf/terrestrial-planet systems, and discuss a scenario for their formation.

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Control of Jovian radio emission by Ganymede

Cited by 23 publications

References 22 publications

Radio emission from satellite-Jupiter interactions (especially Ganymede)

Radio emission from satellite-Jupiter interactions (especially Ganymede)

Satellite control of Jovian 2–6 MHz radio emission using Voyager data

Radio emissions from terrestrial planets around white dwarfs

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