Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/111142
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Type: Journal article
Title: First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data
Author: Abbott, B.
Abbott, R.
Abbott, T.
Acernese, F.
Ackley, K.
Adams, C.
Adams, T.
Addesso, P.
Adhikari, R.
Adya, V.
Affeldt, C.
Afrough, M.
Agarwal, B.
Agathos, M.
Agatsuma, K.
Aggarwal, N.
Aguiar, O.
Aiello, L.
Ain, A.
Allen, B.
et al.
Citation: Physical Review D, 2017; 96(12):122006-1-122006-20
Publisher: American Physical Society
Issue Date: 2017
ISSN: 2470-0010
2470-0029
Statement of
Responsibility: 
B. P. Abbott, R. Abbott ... Miftar Ganija ... Won Kim ... David J Ottaway ... Peter J Veitch ... et al. (LIGO Scientific Collaboration and Virgo Collaboration)
Abstract: Spinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters obtained from electromagnetic observations, can be carried out. Matched filtering maximizes the signal-to-noise (SNR) ratio, but a large sensitivity loss is expected in case of even a very small mismatch between the assumed and the true signal parameters. For this reason, narrow-band analysis methods have been developed, allowing a fully coherent search for gravitational waves from known pulsars over a fraction of a hertz and several spin-down values. In this paper we describe a narrow-band search of 11 pulsars using data from Advanced LIGO’s first observing run. Although we have found several initial outliers, further studies show no significant evidence for the presence of a gravitational wave signal. Finally, we have placed upper limits on the signal strain amplitude lower than the spin-down limit for 5 of the 11 targets over the bands searched; in the case of J1813-1749 the spin-down limit has been beaten for the first time. For an additional 3 targets, the median upper limit across the search bands is below the spin-down limit. This is the most sensitive narrow-band search for continuous gravitational waves carried out so far.
Rights: © 2017 American Physical Society
RMID: 0030080184
DOI: 10.1103/PhysRevD.96.122006
Appears in Collections:Physics publications

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