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Astron. Astrophys. 348, 311-326 (1999)

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Perturbative analysis in planetary gravitational lensing

Valerio Bozza

Dipartimento di Scienze Fisiche E.R. Caianiello, Università di Salerno, I-84081 Baronissi, Salerno, Italy (valboz@physics.unisa.it)

Received 26 January 1999 / Accepted 30 April 1999


The traditional perturbative method is applied to the case of gravitational lensing of planetary systems. A complete and detailed description of the structure of caustics for a system with an arbitrary number of planets can be obtained. I have also found precise analytical expressions for microlensing light curves perturbed by the presence of planets.

Key words: gravitation – relativity – stars: planetary systems

© European Southern Observatory (ESO) 1999

Online publication: July 16, 1999