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SUMMARY:Secular chaos in the solar system - Pan\, M (Princeton)
DTSTART:20091109T151000Z
DTEND:20091109T153000Z
UID:TALK21399@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Motivated by Laskar's 2008 finding that secular interactions a
 mong the eight major solar system planets 1) cause the four inner planets 
 to act chaotically and 2) induce much larger eccentricity/inclination vari
 ations for Mercury than for Venus\, Earth\, or Mars\, we investigate highe
 r-order couplings between the normal modes of the classical Laplace-Lagran
 ge secular theory. We do this by constructing\, in effect\, a secular theo
 ry for these normal modes\; we include long-term effects of near two-body 
 mean-motion resonances among the outer planets. We study the effects on bo
 th the giant planets and on test particles (e.g. asteroids/Kuiper belt obj
 ects) of the resulting weak nonlinear couplings between the normal modes d
 ominating inner- and outer-planet motions.
LOCATION:Satellite
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