Shell sources as a probe of relativistic effects in neutron star models

Details Shell sources as a probe of relativistic effects in neutron star models Shell sources as a probe of relativistic effects in neutron star models

2000-02-22

arxiv.org/abs/gr-qc/0002077v2

Phys.Rev. D62 (2000) 044032

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages LaTeX with 6 eps figures; submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.62.044032

A perturbing shell is introduced as a device for studying the excitation of fluid motions in relativistic stellar models. We show that this approach allows a reasonably clean separation of radiation from the shell and from fluid motions in the star, and provides broad flexibility in the location and timescale of perturbations driving the fluid motions. With this model we compare the relativistic and Newtonian results for the generation of even parity gravitational waves from constant density models. Our results suggest that relativistic effects will not be important in computations of the gravitational emission except possibly in the case of excitation of the neutron star on very short time scales.

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