Experimental signatures of gravitational wave bursters

Details Experimental signatures of gravitational wave bursters Experimental signatures of gravitational wave bursters

2004-10-13

arxiv.org/abs/gr-qc/0410057v1

Phys.Rev. D71 (2005) 124003

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4pages, 2 figs

Scientific paper

10.1103/PhysRevD.71.124003

Gravitational wave bursters are sources which emit repeatedly bursts of gravitational waves, and have been recently suggested as potentially interesting candidates for gravitational wave (GW) detectors. Mechanisms that could give rise to a GW burster can be found for instance in highly magnetized neutron stars (the magnetars which explain the phenomenon of soft gamma repeaters), in accreting neutron stars and in hybrid stars with a quark core. We point out that these sources have very distinctive experimental signatures. In particular, as already observed in the gamma-ray bursts from soft gamma repeaters, the energy spectrum of the events is a power-law, dN\sim E^{-\gamma}dE with \gamma\simeq 1.6, and they have a distribution of waiting times (the times between one outburst and the next) significantly different from the distribution of uncorrelated events. We discuss possible detection strategies that could be used to search for these events in existing gravitational wave detectors.

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