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Stable Lagrange points of large planets as possible regions where WIMPs could be sought

Domenii publicaţii > Matematica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: S. Ciulli and C. Sebu

Editorial: IOP Publishing, Journal of Physics A, 41, 2008.


In this paper we show that the physical properties of the Lagrange points of
large planets could provide an effective mechanism for trapping dark matter, if
dark matter really exists in our solar system. Certainly, the familiar trapping
mechanism of a potential well combined with some dissipative processes is
not a good candidate for particles like WIMPs which are supposed to be very
slippery. However, in each of the Lagrange regions, L4 and L5, of large planets
the potential has a maximum which together with the Coriolis force provides
an effective trapping mechanism without the need of any kind of friction. This
is a purely inertial and gravitational mechanism with no assumptions on other
possible interactions. Hence if the density of darkmatter is not negligible in this
part of the universe, a direct experiment to be considered is the establishment
of a satellite in orbit around one of the stable Lagrange points, L4 or L5, of

Cuvinte cheie: dark matter