International Cometary Explorer encounter with Giacobini-Zinner - Magnetic field observations

Details International Cometary Explorer encounter with Giacobini-Zinner - Magnetic field observations International Cometary Explorer encounter with Giacobini-Zinner - Magnetic field observations

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sci...232..382s&link_type=abstract

Science (ISSN 0036-8075), vol. 232, April 18, 1986, p. 382-385. NASA-supported research.

Physics

126

Cometary Magnetospheres, Giacobini-Zinner Comet, International Sun Earth Explorer 3, Interplanetary Magnetic Fields, Magnetic Measurement, Bow Waves, Field Strength, Magnetic Variations, Shock Waves, Solar Wind, Comets, Giacobini-Zinner, Ice Mission, Mission Description, Comet Tails, Spacecraft Observations, Comae, Solar Wind, Interaction, Atmosphere, Magnetic Fields, Helium Vector Magnetometer, Magnetotail, Bow Shock, Plasma, Current Sheet, Ionosheath, Turbulence, Magnetohydrodynamics, Shape, Upstream, Dow

Scientific paper

The vector helium magnetometer on the International Cometary Explorer observed the magnetic fields induced by the interaction of comet Giacobini-Zinner with the solar wind. A magnetic tail was penetrated about 7800 kilometers downstream from the comet and was found to be 10,000 kilometers wide. It consisted of two lobes, containing oppositely directed fields with strengths up to 60 nanoteslas, separated by a plasma sheet about 1000 kilometers thick containing a thin current sheet. The magnetotail was enclosed in an extended ionosheath characterized by intense hydromagnetic turbulence and interplanetary fields draped around the comet. A distant bow wave, which may or may not have been a bow shock, was observed at both edges of the ionoshpeath. Weak turbulence was observed well upstream of the bow wave.

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