Proposed Source of Gravitational Radiation from a Torus around a Black Hole

Putten, van; Maurice, H P M

doi:10.1103/physrevlett.87.091101

Cited by 76 publications

(111 citation statements)

References 28 publications

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“…In van Putten's theory, the magnetoturbulent torus excitations produce narrowband elliptically polarized GWs with a frequency between (1 ∼ 2 kHz)(1 + z) for a GRB at a redshift of z [65]. The frequency is predicted to vary with time such that df /dt = const [65].…”

Section: Accretion Disk Instabilitiesmentioning

confidence: 99%

“…The frequency is predicted to vary with time such that df /dt = const [65]. GW emission continues for approximately the same duration as the electromagnetic emission, lasting typically for seconds to minutes [11].…”

Section: Accretion Disk Instabilitiesmentioning

confidence: 99%

“…Van Putten, in a series of articles (see, e.g., [5,65,66] and references therein), has proposed an extreme "suspended-accretion" scenario in which the central black hole and the accretion torus are dynamically linked by strong magnetic fields. In this picture, black hole spin-down drives both the actual GRB central engine and strong magnetoturbulence in the torus, leading to a time-varying mass quadrupole moment and, thus, to the emission of GWs.…”

Section: Accretion Disk Instabilitiesmentioning

confidence: 99%

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Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers

et al. 2011

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Searches for gravitational waves (GWs) traditionally focus on persistent sources (e.g., pulsars or the stochastic background) or on transients sources (e.g., compact binary inspirals or core-collapse supernovae), which last for timescales of milliseconds to seconds. We explore the possibility of long GW transients with unknown waveforms lasting from many seconds to weeks. We propose a novel analysis technique to bridge the gap between short O(s) "burst" analyses and persistent stochastic analyses. Our technique utilizes frequency-time maps of GW strain cross-power between two spatially separated terrestrial GW detectors. The application of our cross-power statistic to searches for GW transients is framed as a pattern recognition problem, and we discuss several patternrecognition techniques. We demonstrate these techniques by recovering simulated GW signals in simulated detector noise. We also recover environmental noise artifacts, thereby demonstrating a novel technique for the identification of such artifacts in GW interferometers. We compare the efficiency of this framework to other techniques such as matched filtering.PACS numbers: 95.55.Ym

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Section: Accretion Disk Instabilitiesmentioning

confidence: 99%

Section: Accretion Disk Instabilitiesmentioning

confidence: 99%

Section: Accretion Disk Instabilitiesmentioning

confidence: 99%

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Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers

et al. 2011

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“…At least two types of models have been proposed in which long GRBs may be associated with long-lived $10-1000 s gravitational-wave (GW) transients. One family of models relies on the formation of clumps in the accretion disk surrounding a newly formed black hole following core collapse [13][14][15][16][17]. The motion of the clumps generates long-lived narrowband GWs.…”

Section: Introductionmentioning

confidence: 99%

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

Aasi¹,

Abadie²,

Abbott³

et al. 2013

Phys. Rev. D

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"The author(s), and in the case of a Work Made For Hire, as defined in the U.S. Copyright Act, 17 U.S.C. §101, the employer named [below], shall have the following rights (the "Author Rights"):3. The right to use all or part of the Article, including the APS-prepared version without revision or modification, on the author(s)' web home page or employer's website and to make copies of all or part of the Article, including the APS-prepared version without revision or modification, for the author(s)' and/or the employer's use for educational or research purposes." Sep, 2016Search for long-lived gravitational-wave transients coincident with long gamma-ray bursts 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 À2 to F < 1200 ergs cm À2 , 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 10Â better than initial LIGO, potentially allowing us to probe the engines of the nearest long GRBs.

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“…Some searches for gravitational-wave transients seek to detect gravitational-wave transients lasting ∼10-1000 s. Compact binary coalescences of black holes (and/or neutron stars) are one example of long-lived gravitational-wave sources [3][4][5]. Uncertain models exist for more exotic sources of long-lived transients, including emission from rotational instabilities in protoneutron stars [6][7][8][9] and black-hole accretion disk instabilities [10][11][12]. When a matched filter search is not possible, searches for unmodeled long-lived transients [13][14][15][16][17][18] can be employed.…”

Section: Introductionmentioning

confidence: 99%

Prospects for searches for long-duration gravitational-waves without time slides

et al. 2015

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The detection of unmodeled gravitational-wave transients by ground-based interferometric gravitational-wave detectors is an important goal for the advanced detector era. These searches are commonly cast as pattern recognition problems, where the goal is to identify statistically significant clusters indicating the presence of gravitational-wave transients in spectrograms of detector strain power when the precise signal morphology is unknown. In previous work, we have introduced a clustering algorithm referred to as seedless clustering, and shown that it is a powerful tool for detecting weak and long-lived (∼10-1000 s) gravitational-wave transients. However, as the algorithm is currently conceived, in order to carry out a search on approximately a year of data, significant computational resources may be required for estimating background events. Currently, the use of the algorithm is limited by the computational resources required for performing background studies to assign significance to events identified by the algorithm. In this paper, we present an analytic method for estimating the background generated by the seedless clustering algorithm and compare the performance to both Monte Carlo Gaussian noise and time-shifted gravitational-wave data from a week of LIGO's 5th Science Run. We demonstrate qualitative agreement between the model and measured distributions and argue that the approximation will be useful to supplement conventional background estimation techniques for advanced detector searches for long-duration gravitationalwave transients.

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Proposed Source of Gravitational Radiation from a Torus around a Black Hole

Cited by 76 publications

References 28 publications

Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers

Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers

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

Prospects for searches for long-duration gravitational-waves without time slides

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