Benvenuti nell'Anagrafe della Ricerca d'Ateneo
La valutazione delle attività di ricerca che si svolgono nelle università ha assunto un'importanza rilevante sia per l'intero sistema universitario sia all'interno di ogni singolo ateneo. Roma Tre si è quindi dotata di idonei strumenti informativi in grado di supportare al meglio le azioni di monitoraggio e di valutazione delle attività di ricerca svolte nei propri dipartimentied ha realizzato una Anagrafe della Ricerca di Ateneo.
EnglishIn this paper, we make a detailed study of the spin–orbit dynamics of Mercury, as predicted by the realistic model that has been recently introduced in a series of papers mainly by Efroimsky and Makarov. We present numerical and analytical results concerning the nature of the librations of Mercury's spin in the 3:2 resonance. The results provide evidence that the librations are quasi-periodic in time, consisting of a slow oscillation, with an amplitude of order of arcminutes, superimposed on the 88-d libration. This contrasts with recent astronomical observations and hence suggests that the 3:2 resonance in which Mercury has been trapped might have been originally described by a large-amplitude quasi-periodic libration that, only at a later stage, with the formation of a molten core, evolved into the small-amplitude libration that is observed today.
| Titolo: | Periodic and quasi-periodic attractors for the spin–orbit evolution of Mercury with a realistic tidal torque |
| Autori: | |
| Data di pubblicazione: | 2017 |
| Rivista: | |
| Citazione: | Bartuccelli, M., Deane, J., & Gentile, G. (2017). Periodic and quasi-periodic attractors for the spin–orbit evolution of Mercury with a realistic tidal torque. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 469(1), 127-150. |
| Abstract: | In this paper, we make a detailed study of the spin–orbit dynamics of Mercury, as predicted by the realistic model that has been recently introduced in a series of papers mainly by Efroimsky and Makarov. We present numerical and analytical results concerning the nature of the librations of Mercury's spin in the 3:2 resonance. The results provide evidence that the librations are quasi-periodic in time, consisting of a slow oscillation, with an amplitude of order of arcminutes, superimposed on the 88-d libration. This contrasts with recent astronomical observations and hence suggests that the 3:2 resonance in which Mercury has been trapped might have been originally described by a large-amplitude quasi-periodic libration that, only at a later stage, with the formation of a molten core, evolved into the small-amplitude libration that is observed today. |
| Handle: | http://hdl.handle.net/11590/327641 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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