{"title":"On the formation of cometary nuclei in a primordial gas cloud","authors":"Mayer Humi","doi":"10.1007/s10509-025-04416-9","DOIUrl":null,"url":null,"abstract":"<div><p>One of the current theories about the formation of a planetary system conjectures that traveling waves within a primordial interstellar gas cloud might have led, eventually, to the formation of the planets. As an initial step in this process embedded solid particles within a traveling wave may commence self-gravitational accumulation at the wave crests, where the pressure and density are highest, so possibly leading to the formation of cometary nuclei. To test the validity of this conjecture we present in this paper a prototype model for the evolution of systems of self gravitating particles. This model is applied to linear and circular traveling waves and ensembles of particles in a disk. We show that under proper conditions these systems might undergo a bifurcation or “self organization” which leads to the formation of cometary nuclei.</p></div>","PeriodicalId":8644,"journal":{"name":"Astrophysics and Space Science","volume":"370 3","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astrophysics and Space Science","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s10509-025-04416-9","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
One of the current theories about the formation of a planetary system conjectures that traveling waves within a primordial interstellar gas cloud might have led, eventually, to the formation of the planets. As an initial step in this process embedded solid particles within a traveling wave may commence self-gravitational accumulation at the wave crests, where the pressure and density are highest, so possibly leading to the formation of cometary nuclei. To test the validity of this conjecture we present in this paper a prototype model for the evolution of systems of self gravitating particles. This model is applied to linear and circular traveling waves and ensembles of particles in a disk. We show that under proper conditions these systems might undergo a bifurcation or “self organization” which leads to the formation of cometary nuclei.
期刊介绍：
Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered.
The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing.
Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
