Seedless clustering in all-sky searches for gravitational-wave transients
- Creators
- Thrane, Eric
- Coughlin, Michael
Abstract
The problem of searching for unmodeled gravitational-wave bursts can be thought of as a pattern recognition problem: how to find statistically significant clusters in spectrograms of strain power when the precise signal morphology is unknown. In a previous publication, we showed how "seedless clustering" can be used to dramatically improve the sensitivity of searches for long-lived (∼10–1000 s) gravitational-wave transients. To manage the computational costs, this initial analysis focused on externally triggered searches where the source location and emission time are both known to some degree of precision. In this paper, we show how the principle of seedless clustering can be extended to facilitate computationally feasible, all-sky searches where the direction and emission time of the source are entirely unknown. We further demonstrate that it is possible to achieve a considerable reduction in computation time by using graphical processor units, thereby facilitating more sensitive searches.
Additional Information
© 2014 American Physical Society. Received 30 January 2014; published 25 March 2014. We thank Stuart Anderson, Juan Barayoga, and Fred Donovan for assistance with GPUs. We thank Anthony Piro for sharing the fallback accretion waveforms used in this analysis. We thank Tanner Prestegard and Vuk Mandic for helpful comments on a draft of this paper. E. T. is a member of the LIGO Laboratory, supported by funding from United States National Science Foundation. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation and operates under Cooperative Agreement No. PHY-0757058. M. C. is supported by National Science Foundation Graduate Research Fellowship Program, under NSF Grant No. DGE 1144152.Attached Files
Published - PhysRevD.89.063012.pdf
Submitted - 1401.8060v1.pdf
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Additional details
- Eprint ID
- 46016
- Resolver ID
- CaltechAUTHORS:20140530-142308522
- NSF
- PHY-0757058
- NSF Cooperative Agreement
- DGE 1144152
- NSF Graduate Research Fellowship
- Created
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2014-05-30Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field