The Evolution of the Nucleus Surface in the Context of the Change in the Brightness of a Comet

作     者：Marcin Wesolowski Marcin Weso?owski

作者机构：College of Natural SciencesInstitute of PhysicsUniversity of RzeszówPigonia 1 Street35-310 RzeszowPolang 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2022年第22卷第5期

页      面：136-145页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：the Centre for Innovation and Transfer of Natural Sciences and Engineering Knowledge  University of Rzeszów  Poland 

主　　题：comets comet nuclei comet surfaces 

摘      要：The paper presents a model of the thermodynamic evolution of the comet nucleus *** the proposed approach,we focus on the analysis of the formation of pits visible on the surface of the cometary *** pits are a consequence of the thermodynamic evolution of both the surface layers and the inner layers of the cometary *** a result of complex thermodynamic processes,the surface layer is destroyed.A measure of this destruction is the amount of comet material that is thrown into a coma as a result of *** effect of this process is an increase in the area on which the incident light *** we can notice a sudden increase in the brightness of the comet,i.e.,its outburst.A measure of the amplitude of a given outburst is the diameter and thickness of the surface layer that has been *** mechanism of the evolution of the pits was proposed based on the analysis of many photos taken by the Rosetta *** obtained numerical values correspond to the actual brightness changes of the Jupiter family comets during their outburst.