Astronomy and Astrophysics – Astronomy
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..303s&link_type=abstract
Nature (ISSN 0028-0836), vol. 321, May 15, 1986, p. 303-307.
Astronomy and Astrophysics
Astronomy
37
Halley'S Comet, Interplanetary Magnetic Fields, Plasma Interactions, Spaceborne Astronomy, Comet Tails, Japanese Spacecraft, Magnetic Measurement, Oxygen Ions, Solar Magnetic Field, Waves, Comets, Halley, Spacecraft Observations, Mission Description, Experiments, Magnetic Fields, Interaction, Sakigake, Models, Magnetohydrodynamics, Neutral Particles, Ionization, Waves, Source, Formation, Diagrams
Scientific paper
Clear multiple crossings of the nearly horizontal heliospheric neutral sheet were detected by the Sakagake cometary probe's magnetometer near comet Halley's ion tail. An IMF-comet interaction model with quasi-parallel neutral sheet is proposed to explain why a disconnection event did not occur. Hydromagnetic wave enhancements were observed near the time of greatest proximity to comet Halley; it is proposed that neutral particles of cometary origin yield the ionized O(+) or H2O(+) particles that excite the hydromagnetic waves, some seven million km upstream of the comet.
Hirao Kimihiko
Nakagawa Takao
Saito Katsuhiko
Saito Takesi
Yumoto Kiyo
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