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Pick-up ions and associated wave energy transport at Comet P/Halley: A case study

Söding, A; Glassmeier, K-H; Johnstone, A; Neubauer, FM; Coates, AJ; (1997) Pick-up ions and associated wave energy transport at Comet P/Halley: A case study. Geophysical Research Letters , 24 (3) 305 - 308. 10.1029/97GL00105. Green open access

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Abstract

During the flyby of the spacecraft Giotto at comet p/Halley Poynting vectors and Elsässer variables have been determined to study wave propagation directions. The observed wave properties are compared with the theoretically predicted RH −, LH + and LH − wave modes. Between 10:36 and 19:11 SCET on March 13, 1986 the predicted dominating energy propagation direction mostly corresponds with the observed one. Only between 12:11 and 13:44 SCET there is no agreement. In this region the excitation of waves is dominated by pick‐up ions which are not locally implanted ions in the solar wind but have been picked‐up outside the plasma regime studied, and whose free energy is not already used up.

Type: Article
Title: Pick-up ions and associated wave energy transport at Comet P/Halley: A case study
Open access status: An open access version is available from UCL Discovery
DOI: 10.1029/97GL00105
Publisher version: http://dx.doi.org/10.1029/97GL00105
Language: English
Additional information: Copyright 1997 by the American Geophysical Society
Keywords: Solar-wind, Elsasser variables, Halley, Turbulence
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/398860
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