Gravitational waves emitted by extrasolar planetary systems

Details Gravitational waves emitted by extrasolar planetary systems Gravitational waves emitted by extrasolar planetary systems

2000-01-26

arxiv.org/abs/astro-ph/0001463v3

Int.J.Mod.Phys. D9 (2000) 495-509

Astronomy and Astrophysics

Astrophysics

14 pages, 5 figures. Accepted for publication on International Journal of Modern Physics D. Table 6 and minor typos corrected

Scientific paper

10.1142/S0218271800000530

In this paper we consider the Extra-solar Planetary Systems recently discovered in our Galaxy as potential sources of gravitational waves. We estimate the frequency and characteristic amplitude of the radiation they emit due to the orbital motion, using the quadrupole formalism. In addition, we check whether the conditions needed for the resonant excitation of the f- and g-modes of the central star can be fulfilled. By a Roche-lobe analysis, we show that there could exist systems in which the low-order g-modes could be excited, although this does not happen in the systems discovered up to now.

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