What drives the dust activity of comet 67P/Churyumov-Gerasimenko?

Context. The gas-driven dust activity of comets is still an unsolved question in cometary physics. Homogeneous dust layers composed of micrometer-sized grains possess tensile strengths of ~1 kPa, which is far higher than typical gas pressures caused by the sublimation of the ices beneath the coverin...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2015-11, Vol.583, p.A12
Hauptverfasser:	Gundlach, B., Blum, J., Keller, H. U., Skorov, Y. V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aggregates Comet nuclei Comets comets: general Dust Ejection Gas pressure Grains methods: analytical solid state: volatile Sublimation
Online-Zugang:	Volltext
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