Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1999-01-22
Phys.Rev. D59 (1999) 124020
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
23 pages, 6 figures, RevTeX
Scientific paper
10.1103/PhysRevD.59.124020
We compute the energy spectra of the gravitational signals emitted when a
mass m is scattered by the gravitational field of a star of mass M >> m. We
show that, unlike black holes in similar processes, the quasi-normal modes of
the star are excited, and that the amount of energy emitted in these modes
depends on how close the exciting mass can get to the star.
Borrelli Arianna
Ferrari Valeria
Gualtieri Leonardo
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