Physics
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..307o&link_type=abstract
Nature (ISSN 0028-0836), vol. 321, May 15, 1986, p. 307-310. NASA-supported research.
Physics
16
Comet Nuclei, Emission Spectra, Halley'S Comet, Kilometric Waves, Plasma Waves, Solar Wind, Extraterrestrial Radiation, Extremely Low Frequencies, Plasma Density, Sweep Frequency, Comets, Halley, Spacecraft Observations, Mission Description, Experiments, Kilometer Waves, Radiation, Plasma, Waves, Plasma Wave Probe, Sakigake, Pwp, Spectra, Emissions, Frequencies, Shock Effects, Comae, Source, Solar Wind, Ions, Stability, Power, Electrical Fields, Dynamics
Scientific paper
The plasma-wave probe carried by the spacecraft Sakigake discovered discrete spectra of emissions from comet Halley in the frequency range 30 - 195 kHz. The observed cometary kilometric radiation appears to come from moving shocks in the coma region which are possibly associated with temporal variations of the solar wind. Waves due to plasma instabilities associated with the pick-up of cometary ions by the solar wind were observed within a region almost 107km from the comet nucleus.
Miyake Wataru
Morioka Akira
Oya Hiroshi
Smith Edward. J.
Tsurutani Bruce T.
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