Detection of cometary ions at a distance of seven million kilometers upstream of Comet Halley

Details Detection of cometary ions at a distance of seven million kilometers upstream of Comet Halley Detection of cometary ions at a distance of seven million kilometers upstream of Comet Halley

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989p%26ss...37..517o&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 37, May 1989, p. 517-524.

Physics

1

Halley'S Comet, Interplanetary Spacecraft, Molecular Ions, Oxygen Ions, Positive Ions, Solar Wind Velocity, Electrostatic Probes, Interplanetary Magnetic Fields, Japanese Space Program, Comets, Halley, Ions, Distance, Upstream, Sakigake Mission, Solar Wind, Velocity, Water, Spacecraft Observations, Sow Instrument, Ch Radical, Diagrams, Spectra, Origin, Source, Carbon, Oxygen, Carbon Monoxide

Scientific paper

Data from Comet Halley obtained by the Sakigake spacecraft between March 10-12, 1986 are reported. At the closest approach, on March 11 at 04:17:00 UT at a distance from the comet of 7 million km, a small fluctuation of solar wind velocity due to H2O(+) ions was first detected. Maximum fluctuations were observed between 22:30:00 and 24:00:00 of the same day. The results suggest the continued presence of H2O along the path of Comet Halley.

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