Cometary origin of interplanetary submicron dust

Details Cometary origin of interplanetary submicron dust Cometary origin of interplanetary submicron dust

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84..143p&link_type=abstract

Astronomical Journal, vol. 84, Jan. 1979, p. 143-147.

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Interplanetary Dust, Interplanetary Medium, Microparticles, Comet Nuclei, Electrodynamics, Numerical Integration, Quasi-Steady States, Cosmic Dust, Particles, Submicron Particles, Comets, Ecliptic Plane, Zodiacal Light, Photoelectric Emissions, Electrodynamics, Density, Solar Wind, Concentrations, Emissions

Scientific paper

Biermann's (1967) suggestion that the submicron dust particles in the interplanetary medium may be of cometary origin is quantitatively pursued. With the aid of luminosity data pertaining to 46 long-period comets, it is found that long-period comets contribute 20 billion tons of dust of radius at least 0.0001 cm, per year, on average. If the emitted dust particles are fragile agglomerates of submicron grains that could eventually splinter, collisionally or otherwise, then the contribution is probably adequate to balance the loss rate of interplanetary submicron dust engendered by stochastic electrodynamic effects in the medium and sustain a quasi-steady-state concentration. The tentative nature of this conclusion is discussed.

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