Search for long-lived gravitational-wave transients coincident with long gamma-ray bursts

J. Aasi et al.
Phys. Rev. D 88, 122004 – Published 13 December 2013

Abstract

Long gamma-ray bursts (GRBs) have been linked to extreme core-collapse supernovae from massive stars. Gravitational waves (GW) offer a probe of the physics behind long GRBs. We investigate models of long-lived (101000s) GW emission associated with the accretion disk of a collapsed star or with its protoneutron star remnant. Using data from LIGO’s fifth science run, and GRB triggers from the Swift experiment, we perform a search for unmodeled long-lived GW transients. Finding no evidence of GW emission, we place 90% confidence-level upper limits on the GW fluence at Earth from long GRBs for three waveforms inspired by a model of GWs from accretion disk instabilities. These limits range from F<3.5ergscm2 to F<1200ergscm2, depending on the GRB and on the model, allowing us to probe optimistic scenarios of GW production out to distances as far as 33Mpc. Advanced detectors are expected to achieve strain sensitivities 10× better than initial LIGO, potentially allowing us to probe the engines of the nearest long GRBs.

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  • Received 9 October 2013

DOI:https://doi.org/10.1103/PhysRevD.88.122004

© 2013 American Physical Society

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Vol. 88, Iss. 12 — 15 December 2013

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