Capture and escape from the 2:1 resonance between Ariel and Umbriel in a fast-migration scenario of the Uranian system. - Rossi, M.; Lari, G.; Falletta, M.; Grassi, C.; Gomes, S. R. A.; Saillenfest, M. (Astronomy & Astrophysics / Astronomie et Astrophysique, 2026)