Thermodynamic model of the activity of the comet 103P/Hartley

• 作者: Marcin Weso?owski
• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2021,（12）
• 页码范围: 1-8
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-4527/ac2942

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 103P/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 103P/Hartley,the coefficient of friction and the structure of the solid or porous particles are of key importance.