A streaming instability interaction between the solar wind and cometary dust

Details A streaming instability interaction between the solar wind and cometary dust A streaming instability interaction between the solar wind and cometary dust

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...193..309h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 193, no. 1-2, March 1988, p. 309-312. Research supported by the Norges Almenvi

Astronomy and Astrophysics

Astrophysics

48

Comets, Interplanetary Dust, Magnetohydrodynamic Stability, Plasma Interactions, Solar Wind, Plasma Turbulence, Solar Wind Velocity

Scientific paper

The author studies conditions for the onset of a streaming instability between solar wind plasma flow and cometary dust. Such an instability can drastically increase the coupling, i.e. the effective collision frequency, between the wind and the dust. It is found that the instability may occur at high solar wind velocities but that a very low velocity dispersion within the dust cloud is required. Small dust particles are favoured by this process and are the ones which are most likely to be swept along with the solar wind plasma. A high neutral gas density can prevent the onset of the instability.

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