247 citations · 778 across the 6 of their papers we have counts for
5 papers · 1 filter
Constraints on the ejecting-crust activity model on comet 67P/Churyumov-Gerasimenko
Nicholas Attree, Pedro Gutiérrez, Christian Schuckart +6
Reproducing the observed activity of comets with thermophysical models remains a primary challenge of cometary science. We use a pebble-based thermophysical model of gas-pressure b…
Localised ejection of dust and chunks on comet 67P/Churyumov-Gerasimenko: testing how comets work
Nicholas Attree, Christian Schuckart, Dorothea Bischoff +2
We extend an existing thermophysical activity model of comet 67P/Churyumov-Gerasimenko to include pressure buildup inside the pebbles making up the nucleus. We test various quantit…
Comets formed in solar-nebula instabilities! -- An experimental and modeling attempt to relate the activity of comets to their formation process (corrigendum included)
Jürgen Blum, Bastian Gundlach, Steffen Mühle +1
When comet nuclei approach the Sun, the increasing energy flux through the surface layers leads to sublimation of the underlying ices and subsequent outgassing that promotes the ob…
A new method to determine the grain size of planetary regolith
Bastian Gundlach, Jürgen Blum
Airless planetary bodies are covered by a dusty layer called regolith. The grain size of the regolith determines the temperature and the mechanical strength of the surface layers.…
Dust release and tensile strength of the non-volatile layer of cometary nuclei
Yuri Skorov, Jürgen Blum
We developed a thermophysical model for cometary nuclei, which is based upon the assumption that comets form by the gravitational instability of an ensemble of dust and ice aggrega…