Large-scale interaction of the solar wind with comets Halley and Giacobini-Zinner

Details Large-scale interaction of the solar wind with comets Halley and Giacobini-Zinner Large-scale interaction of the solar wind with comets Halley and Giacobini-Zinner

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sici.symp...41b&link_type=abstract

In Alabama Univ., Huntsville. STIP Symposium on Physical Interpretation of Solar/Interplanetary and Cometary Intervals p 41 (SEE

Physics

Giacobini-Zinner Comet, Halley'S Comet, Interplanetary Medium, Intervals, Shock Wave Interaction, Solar Wind, Boundaries, Cometary Atmospheres, Ground Stations, Ions, Magnetic Fields, Regions, Remote Sensing, Vega Project

Scientific paper

In-situ measurements of comets Halley and Giacobini-Zinner have confirmed the accepted basic physics of comet/solar wind interaction. The solar wind magnetic field is captured by the comet through the mechanism of field-line loading by cometary ions and the field lines drape around the cometary ionosphere. With this basic model in hand, the large-scale structure of the plasma tail as revealed by submissions to the Large Scale Phenomena Network of the International Halley Watch is reviewed. The turn-on and turn-off of plasma activity seem consistent with theory. Some 16 obvious disconnection events (DEs) have been recorded. Preliminary results showed agreement with the sector-boundary model; a detailed analysis of all DEs will be required in order to make a definitive statement. A study of plasma activity around the time of the VEGA encounters provides strong support for the sector-boundary model and illustrates once again the power of simultaneous remote and in-situ measurements.

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