Nongravitational forces and meteoroid streams

Computer Science

Scientific paper

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Electromagnetic Radiation, Encke Comet, Interplanetary Dust, Meteoroid Showers, Meteoroids, Radiation Pressure, Solar Radiation, Transverse Waves, Orbit Calculation, Orbit Perturbation, Orbital Elements

Scientific paper

The action of the solar electromagnetic radiation on the moving interplanetary dust particles in its more complete form than the special case known as the Poynting-Robertson effect (P-R effect) is theoretically discussed in application to meteoroid stream of comet Encke. Normal and transverse components of the perturbing nongravitational force are used due to the action of the solar electromagnetic radiation. It is shown that the normal component of the force is negligible. However, the transverse component is very important: it can probably completely explain all the observed meteoroid streams situated along the orbit of comet Encke (and, possibly, some asteroids) as the product of the comet Encke alone. Much shorter time is required for producing such a meteoroid stream than is a general conception. If the idea about the significance of the transverse component of the nongravitational force (may be, not produced by electromagnetic radiation) is correct, it may have important consequences for our understanding of aging of comets, global evolution of the cometary (and, partially, asteroidal) system, and, of course, for a long-term evolution of small interplanetary particles.

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