Gravitational waves emitted by solar-type stars excited by orbiting planets
Astrophysics
2009-10-31 v2 General Relativity and Quantum Cosmology
Abstract
The possibility of exciting the g-modes of a solar-type star as a consequence of the gravitational interaction with a close companion (a planet or a brown dwarf) is studied by a perturbative approach. The amplitude of the emitted gravitational wave is computed and compared with the quadrupole emission of the system, showing that in some cases it can be considerably larger. The effects of radiation reaction are considered to evaluate the timescale of the emission process, and a Roche lobe analysis is used to establish the region where the companion can orbit without being disrupted by tidal interactions with the star.
Cite
@article{arxiv.astro-ph/0011364,
title = {Gravitational waves emitted by solar-type stars excited by orbiting planets},
author = {Emanuele Berti and Valeria Ferrari},
journal= {arXiv preprint arXiv:astro-ph/0011364},
year = {2009}
}
Comments
19 pages, 1 figure, submitted to Phys. Rev. D. Typo in formula (5.4) corrected