### Abstract

Language | English |
---|---|

Article number | 085014 |

Number of pages | 36 |

Journal | Classical and Quantum Gravity |

Volume | 31 |

Issue number | 8 |

DOIs | |

Publication status | Published - 3 Apr 2014 |

### Fingerprint

### Keywords

- gravitation
- cosmology
- LIGO scientific collaboration
- gravitational waves
- all sky searching
- pulsars

### Cite this

*Classical and Quantum Gravity*,

*31*(8), [085014]. https://doi.org/10.1088/0264-9381/31/8/085014

}

*Classical and Quantum Gravity*, vol. 31, no. 8, 085014. https://doi.org/10.1088/0264-9381/31/8/085014

**Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run.** / Aasi, J.; Lockerbie, N. A.; Tokmakov, K. V.; LIGO Scientific Collaboration; Virgo Collaboration.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run

AU - Aasi, J.

AU - Lockerbie, N. A.

AU - Tokmakov, K. V.

AU - LIGO Scientific Collaboration

AU - Virgo Collaboration

N1 - J Aasi et al 2014 Class. Quantum Grav. 31 085014. © Copyright 2014 IOP Publishing

PY - 2014/4/3

Y1 - 2014/4/3

N2 - We report on an all-sky search for periodic gravitational waves in the frequency range 50-1000 Hz with the first derivative of frequency in the range -8.9 Chi 10(-10) Hz s(-1) to zero in two years of data collected during LIGO's fifth science run. Our results employ a Hough transform technique, introducing a chi(2) test and analysis of coincidences between the signal levels in years 1 and 2 of observations that offers a significant improvement in the product of strain sensitivity with compute cycles per data sample compared to previously published searches. Since our search yields no surviving candidates, we present results taking the form of frequency dependent, 95% confidence upper limits on the strain amplitude h(0). The most stringent upper limit from year 1 is 1.0 Chi 10(-24) in the 158.00-158.25 Hz band. In year 2, the most stringent upper limit is 8.9 Chi 10(-25) in the 146.50-146.75 Hz band. This improved detection pipeline, which is computationally efficient by at least two orders of magnitude better than our flagship Einstein@ Home search, will be important for 'quicklook' searches in the Advanced LIGO and Virgo detector era.

AB - We report on an all-sky search for periodic gravitational waves in the frequency range 50-1000 Hz with the first derivative of frequency in the range -8.9 Chi 10(-10) Hz s(-1) to zero in two years of data collected during LIGO's fifth science run. Our results employ a Hough transform technique, introducing a chi(2) test and analysis of coincidences between the signal levels in years 1 and 2 of observations that offers a significant improvement in the product of strain sensitivity with compute cycles per data sample compared to previously published searches. Since our search yields no surviving candidates, we present results taking the form of frequency dependent, 95% confidence upper limits on the strain amplitude h(0). The most stringent upper limit from year 1 is 1.0 Chi 10(-24) in the 158.00-158.25 Hz band. In year 2, the most stringent upper limit is 8.9 Chi 10(-25) in the 146.50-146.75 Hz band. This improved detection pipeline, which is computationally efficient by at least two orders of magnitude better than our flagship Einstein@ Home search, will be important for 'quicklook' searches in the Advanced LIGO and Virgo detector era.

KW - gravitation

KW - cosmology

KW - LIGO scientific collaboration

KW - gravitational waves

KW - all sky searching

KW - pulsars

U2 - 10.1088/0264-9381/31/8/085014

DO - 10.1088/0264-9381/31/8/085014

M3 - Article

VL - 31

JO - Classical and Quantum Gravity

T2 - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

SN - 0264-9381

IS - 8

M1 - 085014

ER -