Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...115....8b&link_type=abstract
Astronomy and Astrophysics, vol. 115, no. 1, Nov. 1982, p. 8-19. Direction des Recherches, Etudes et Techniques
Astronomy and Astrophysics
Astrophysics
17
Interplanetary Dust, Kepler Laws, Orbital Elements, Solar Orbits, Solar Wind, Stochastic Processes, Charged Particles, Dielectrics, Eccentric Orbits, Interplanetary Magnetic Fields, Lorentz Force, Particle Diffusion
Scientific paper
Charged dust grains orbiting around the sun at heliocentric latitudes less than 15 deg are submitted to a random Lorentz force due to recurrent sectors of the interplanetary magnetic field and high-speed-streams of the solar wind. Using a formalism previously developed (Barge et al., 1982) the problem is reinvestigated and leads to a detailed description of the scattering process. The changes in the orbital elements are estimated for a time scale of 10 yr; they are found to be less important than believed until now and to vary rapidly with eccentricity and semi-major-axis. Only the very small dielectric dust grains, with size less than 0.5 micron, may be scattered by the Lorentz force fluctuations; the main diffusion occurs in inclination and near the sun (20-60 solar radii).
Barge Pierre
Millet J.
Pellat Rene
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