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Implementation of an F-statistic all-sky search for continuous gravitational waves in Virgo VSR1 data

Aasi, J., Abbott, B. P., Abbott, R., Abbott, T., Abernathy, M. R., Accadia, T., et al. (2014). Implementation of an F-statistic all-sky search for continuous gravitational waves in Virgo VSR1 data. Classical and quantum gravity, 31(16): 165014. doi:10.1088/0264-9381/31/16/165014.

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### Creators

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Creators:
Aasi, J., Author
Abbott, B. P., Author
Abbott, R., Author
Abbott, T., Author
Abernathy, M. R., Author
Acernese, F., Author
Ackley, K., Author
Affeldt, C.1, Author
Agathos, M., Author
Aggarwal, N., Author
Aguiar, O. D., Author
Ain, A., Author
Ajith, P., Author
Alemic, A., Author
Allen, B.2, Author
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011
3Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013
4Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290
5University of Maryland, ou_persistent22
6MPI for Gravitational Physics, Max Planck Society, Am Mühlenberg 1, 14476 Golm, DE, ou_24007
7Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_24010

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Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE, Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract: We present an implementation of the $\mathcal{F}$-statistic to carry out the first search in data from the Virgo laser interferometric gravitational wave detector for periodic gravitational waves from a priori unknown, isolated rotating neutron stars. We searched a frequency $f_0$ range from 100 Hz to 1 kHz and the frequency dependent spindown $f_1$ range from $-1.6\,(f_0/100\,{\rm Hz}) \times 10^{-9}\,$ Hz/s to zero. A large part of this frequency - spindown space was unexplored by any of the all-sky searches published so far. Our method consisted of a coherent search over two-day periods using the $\mathcal{F}$-statistic, followed by a search for coincidences among the candidates from the two-day segments. We have introduced a number of novel techniques and algorithms that allow the use of the Fast Fourier Transform (FFT) algorithm in the coherent part of the search resulting in a fifty-fold speed-up in computation of the $\mathcal{F}$-statistic with respect to the algorithm used in the other pipelines. No significant gravitational wave signal was found. The sensitivity of the search was estimated by injecting signals into the data. In the most sensitive parts of the detector band more than 90% of signals would have been detected with dimensionless gravitational-wave amplitude greater than $5 \times 10^{-24}$.

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Dates: 2014-02-202014-04-102014
Publication Status: Published in print
Pages: 27 pages, 10 figures, submitted to CQG, corrected affiliations and autors list; Science summary of results available at http://www.ligo.org/science/Publication-VSR1CWAllSkyFstat/index.php
Publishing info: -
Rev. Method: -
Identifiers: arXiv: 1402.4974
URI: http://arxiv.org/abs/1402.4974
DOI: 10.1088/0264-9381/31/16/165014
Degree: -

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### Source 1

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Title: Classical and quantum gravity
Source Genre: Journal
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Publ. Info: Bristol, U.K. : Institute of Physics
Pages: - Volume / Issue: 31 (16) Sequence Number: 165014 Start / End Page: - Identifier: ISSN: 0264-9381
CoNE: https://pure.mpg.de/cone/journals/resource/954925513480_1