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

Aasi, J. and Abadie, J. and Abbott, B. P. and Abbott, R. and Abbott, T. and Abernathy, M. R. and Accadia, T. and Acernese, F. and Adams, C. and Adams, T. and Adhikari, R. X. and Affeldt, C. and Agathos, M. and Aggarwal, N. and Aguiar, O. D. and Ajith, P. and Allen, B. and Allocca, A. and Amador, Ceron E. and Amariutei, D. and Anderson, R. A. and Anderson, S. B. and Anderson, W. G. and Arai, K. and Araya, M. C. and Arceneaux, C. and Areeda, J. and Ast, S. and Aston, S. M. and Astone, P. and Debreczeni, Gergely and Endrőczi, Gábor and Frei, Zsolt and Gergely, Árpád László and Gondán, László and Nagy-Egri, Máté Ferenc and Rácz, István and Raffai, Péter and Szeifert, Gábor and Vasúth, Mátyás Zsolt (2013) Search for long-lived gravitational-wave transients coincident with long gamma-ray bursts. PHYSICAL REVIEW D, 88 (12). ISSN 2470-0010

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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 (∼ 10–1000 s) 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 < 3.5 ergs cm−2 to F < 1200 ergs cm−2 , depending on the GRB and on the model, allowing us to probe optimistic scenarios of GW production out to distances as far as ≈ 33 Mpc. 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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