Abstract
AbstractDynamics and distribution of dust and ice particles in the cometary head is investigated for the elongated nucleus in rotation. Three kinds of particles are considered: the dust particles, the ones with volatile fraction and the ice ones. The particles with volatile fraction and sublimated from larger particles are in the cometary head for rather a long time and some abundance of particles and gas can be observed in the region of the head facing the Sun.To estimate the influence of dust density on the gas productivity a numerical simulation was done. The results show that the presence of grains in the coma causes the effects of damping and time delay for gas productivity of an elongated nucleus.
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