摘要
The paper presents three processes related to the dynamics of cometary particles.The following thermodynamic mechanisms were taken into account:quiet sublimation,emission of cometary matter via jet and migration of particles on the surface of the comet 103 P/Hartley.Based on the first two mechanisms,the maximum particle size that can be lifted into the coma was determined.Additionally,in the case of a jet,the angle at which it is emitted from inside the cometary nucleus was determined.However,in the case of migration,the maximum width of individual belts within which a given particle can move was determined.In the context of the discussed mechanisms related to the activity of comet 103 P/Hartley,the coefficient of friction and the structure of the solid or porous particles are of key importance.
