Magnetic field observations in Comet Halley's coma

Details Magnetic field observations in Comet Halley's coma Magnetic field observations in Comet Halley's coma

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..288r&link_type=abstract

Nature (ISSN 0028-0836), vol. 321, May 15, 1986, p. 288, 289. Research supported by the Bundesministerium für Wissenschaft und F

Physics

101

Halley'S Comet, Interplanetary Magnetic Fields, Magnetic Field Configurations, Vega Project, Bow Waves, Comet Heads, Comet Tails, Magnetometers, Solar Wind, Comets, Halley, Spacecraft Observations, Mission Description, Experiments, Magnetic Fields, Comae, Mischa, Magnetometer, Vega 1, Turbulence, Layers, Bow Wave, Rotation, Vega 2, Magnitude, Power, Spectra, Density

Scientific paper

During the encounter with Comet Halley, the magnetometer (MISCHA) aboard the Vega 1 spacecraft observed an increased level of magnetic field turbulence, resulting from an upstream bow wave. Both Vega spacecraft measured a peak field strength of 70-80 nT and observed draping of magnetic field lines around the cometary obstacle. An unexpected rotation of the magnetic field vector was observed, which may reflect either penetration of magnetic field lines into a diffuse layer related to the contact surface separating the solar-wind and cometary plasma, or the persistence of pre-existing interplanetary field structures.

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