TY  - JOUR
A1  - Söding, A
A1  - Glassmeier, K-H
A1  - Johnstone, A
A1  - Neubauer, FM
A1  - Coates, AJ
KW  - Solar-wind
KW  -  Elsasser variables
KW  -  Halley
KW  -  Turbulence
EP  -  308
IS  - 3
Y1  - 1997/02/01/
TI  - Pick-up ions and associated wave energy transport at Comet P/Halley: A case study
VL  - 24
SN  - 0094-8276
N2  - 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.
SP  - 305 
AV  - public
ID  - discovery398860
UR  - http://dx.doi.org/10.1029/97GL00105
N1  - Copyright 1997 by the American Geophysical Society
JF  - Geophysical Research Letters
ER  -