Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9417245e&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Dec. 1, 1989, p. 17245-17249.
Astronomy and Astrophysics
Astronomy
4
Jupiter Atmosphere, Planetary Radiation, Radio Bursts, Voyager Project, Periodic Variations, Polarization (Waves), Radio Astronomy
Scientific paper
The planetary radio astronomy experiment on board both Voyager spacecraft detected bursts of pulsed radio emission at frequencies below about 1.5 MHz which originate near Jupiter. The bursts have a pulse repetition frequency which varies between 0.3 and 3 Hz, a pulse duration between 0.15 and 1.0 s, and a highly visible bandwidth. Before encounter they appear unpolarized, while after encounter roughly half of the bursts appear right-hand and half left-hand circularly polarized. At all times the occurrence probability of bursts above 1 MHz and below 0.3 MHz is lowest around 200 deg in system III longitude (lambda III). The importance of lambda III = 200 deg to these bursts is reminiscent of the importance of the same longitude to the familiar hectometric and broadband kilometric Jovian radiation.
Evans David R.
Snyder Gregory H.
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