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Local activity of comets: an indicator of non-uniform composition

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cris.lastimport.scopus2024-02-12T20:37:24Z
dc.abstract.enIn this paper, we investigate the conditions for the local ejection of a metamorphosed surface layer of material from a comet. We have calculated the strengthening of the material of the nucleus of comet 67P/Churyumov–Gerasimenko and the increase of gas pressure in pores. We are interested in the boundary between the regions Anhur and Bes, where an active pit has been identified. We show that material rich in ice can be exposed as a result of the local ejection of the strengthened layer of material several metres thick. This process does not require locally increased concentrations of very volatile components, such as carbon monoxide. A sufficient condition is the heterogeneity of material granulation.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorCzechowski, Leszek
dc.contributor.authorKossacki, Konrad
dc.date.accessioned2024-01-25T05:13:13Z
dc.date.available2024-01-25T05:13:13Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.number2
dc.description.volume490
dc.identifier.doi10.1093/MNRAS/STZ2739
dc.identifier.issn0035-8711
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/111394
dc.identifier.weblinkhttps://academic.oup.com/mnras/article/490/2/2050/5599836
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.relation.pages2050-2055
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.ensolid state: volatile,
dc.subject.encomets: general
dc.titleLocal activity of comets: an indicator of non-uniform composition
dc.typeJournalArticle
dspace.entity.typePublication