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- · arXiv e-print (arXiv:1309.6160)
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| Title: |
| Search for long-lived gravitational-wave transients coincident with long gamma-ray bursts |
| Authors: |
| The LIGO Scientific Collaboration; the Virgo Collaboration; Aasi, J.; Abadie, J.; Abbott, B. P.; Abbott, R.; Abbott, T.; Abernathy, M. R.; Accadia, T.; Acernese, F.; ... |
| Publication: |
| eprint arXiv:1309.6160 |
| Publication Date: |
| 09/2013 |
| Origin: |
| ARXIV |
| Keywords: |
| Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology |
| Comment: |
| 14 pages, 4 figures |
| Bibliographic Code: |
| 2013arXiv1309.6160T |
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
(~10-1000s) 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 10x better than initial LIGO, potentially
allowing us to probe the engines of the nearest long GRBs.
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