Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.144..427g&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 144, no. 1-2, May 1988, p. 427-438.
Astronomy and Astrophysics
Astrophysics
50
Cometary Atmospheres, Magnetohydrodynamic Waves, Plasma Interactions, Solar Activity Effects, Solar Wind, Two Fluid Models, Giacobini-Zinner Comet, Halley'S Comet, Space Plasmas, Wave Excitation, Wave Propagation
Scientific paper
The importance of Alfvén wave generation in interacting plasmas is discussed in general and illustrated by the example of solar wind interaction with cometary plasma. The quasi-linear theory of Alfvén wave generation by cometary ions at distances far from the cometary nucleus is reviewed. The incorporation of adiabatic plasma compression effects into this theory modifies the spectrum of Alfvén waves and the integral intensity of magnetic field fluctuations previously published. These results are in quantitative agreement with the in situ observations near the comets Giacobini-Zinner and Halley. However, the polarization of quasi-linearly excited waves needs further detailed comparison with observations.
Galeev A. A.
Sagdeev Roal'd. Z.
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