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Detailed Reference Information |
Neubauer, F.M., Glassmeier, K.-H., Coates, A.J., Goldstein, R., Acuña, M.H. and Musmann, G. (1990). Hypervelocity dust particle impacts observed by the Giotto magnetometer and plasma experiments. Geophysical Research Letters 17: doi: 10.1029/90GL01524. issn: 0094-8276. |
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We report thirteen very short events in the magnetic field of the inner magnetic pile-up region of comet Halley observed by the Giotto magnetometer experiment together with simultaneous plasma data obtained by the Johnstone plasma analyzer and the ion mass spectrometer experiments. The events are due to dust impacts in the milligram range on the spacecraft at the relative velocity between the cometary dust and the spacecraft of 68 km/sec. They are generally consistent with dust impact events derived from spacecraft attitude perturbations by the Giotto carmera [Curdt and Keller, private communication>. Their characteristic shape generally involves a sudden decrease in magnetic field magnitude, a subsequent overshoot beyond initial field values and an asymptotic approach to the initial field somewhat reminiscent of the magnetic field signature after the AMPTE releases in the solar wind. These observations give a new way of analyzing ultra-fast dust particles incident on a spacecraft. ¿ American Geophysical Union 1990 |
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Abstract |
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Keywords
Planetology, Comets and Small Bodies, Physics and chemistry of materials |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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