3 papers
astro-ph.EP2025
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…
astro-ph.EP2025
Ephemeris Reconstruction for Comet 67P/Churyumov-Gerasimenko During Rosetta Proximity Phase from Radiometric Data Analysis
Riccardo Lasagni Manghi, Marco Zannoni, Paolo Tortora +3
This study provides a continuous ephemeris reconstruction for comet 67P/Churyumov-Gerasimenko by reanalyzing Rosetta radiometric measurements and Earth-based astrometry. Given the…
astro-ph.EP2024
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…