Stellar Pulsations excited by a scattered mass
V. Ferrari, L. Gualtieri, A. Borrelli
Abstract
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.
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