DSpace DSpace UPC
 Català   Castellano   English  

E-prints UPC >
Altres >
Enviament des de DRAC >

Empreu aquest identificador per citar o enllaçar aquest ítem: http://hdl.handle.net/2117/8993

Ítem no disponible en accés obert per política de l'editorial

Arxiu Descripció MidaFormat
motivating.pdf854,92 kBAdobe PDF Accés restringit

Citació: Alessi, E. M.; Gómez, G.; Masdemont, J.J. A motivating exploration on lunar craters and low-energy dynamics in the Earth–Moon system. "Celestial mechanics and dynamical astronomy", Juny 2010, vol. 107, núm. 1-2, p. 187-207.
Títol: A motivating exploration on lunar craters and low-energy dynamics in the Earth–Moon system
Autor: Alessi, Elisa Maria; Gómez, Gerard; Masdemont Soler, Josep Veure Producció científica UPC
Data: jun-2010
Tipus de document: Article
Resum: It is known that most of the craters on the surface of the Moon were created by the collision of minor bodies of the Solar System. Main Belt Asteroids, which can approach the terrestrial planets as a consequence of different types of resonance, are actually the main responsible for this phenomenon. Our aim is to investigate the impact distributions on the lunar surface that low-energy dynamics can provide. As a first approximation, we exploit the hyberbolic invariantmanifolds associated with the central invariantmanifold around the equilibrium point L2 of the Earth–Moon system within the framework of the Circular Restricted Three-Body Problem. Taking transit trajectories at several energy levels, we look for orbits intersecting the surface of the Moon and we attempt to define a relationship between longitude and latitude of arrival and lunar craters density. Then, we add the gravitational effect of the Sun by considering the Bicircular Restricted Four-Body Problem. In the former case, as main outcome, we observe amore relevant bombardment at the apex of the lunar surface, and a percentage of impact which is almost constant and whose value depends on the assumed Earth–Moon distance dEM. In the latter, it seems that the Earth–Moon and Earth–Moon– Sun relative distances and the initial phase of the Sun θ0 play a crucial role on the impact distribution. The leading side focusing becomes more and more evident as dEM decreases and there seems to exist values of θ0 more favorable to produce impacts with the Moon. Moreover, the presence of the Sun makes some trajectories to collide with the Earth. The corresponding quantity floats between 1 and 5 percent. As further exploration, we assume an uniform density of impact on the lunar surface, looking for the regions in the Earth–Moon
ISSN: 0923-2958
URI: http://hdl.handle.net/2117/8993
DOI: 10.1007/s10569-010-9272-8
Versió de l'editor: http://www.springerlink.com/content/a717484540413706/
Apareix a les col·leccions:EGSA - Equacions Diferencials, Geometria, Sistemes Dinàmics i de Control, i Aplicacions. Articles de revista
Departaments de Matemàtica Aplicada. Articles de revista
Altres. Enviament des de DRAC
Comparteix:


Stats Mostra les estadístiques d'aquest ítem

SFX Query

Aquest ítem (excepte textos i imatges no creats per l'autor) està subjecte a una llicència de Creative Commons Llicència Creative Commons
Creative Commons

 

Valid XHTML 1.0! Programari DSpace Copyright © 2002-2004 MIT and Hewlett-Packard Comentaris
Universitat Politècnica de Catalunya. Servei de Biblioteques, Publicacions i Arxius