2017年12月
First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data
PHYSICAL REVIEW D
- 巻
- 96
- 号
- 12
- 記述言語
- 英語
- 掲載種別
- 機関テクニカルレポート,技術報告書,プレプリント等
- DOI
- 10.1103/PhysRevD.96.122006
- 出版者・発行元
- AMER PHYSICAL SOC
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.
- リンク情報
-
- DOI
- https://doi.org/10.1103/PhysRevD.96.122006
- arXiv
- http://arxiv.org/abs/arXiv:1710.02327
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000418918800001&DestApp=WOS_CPL
- URL
- http://arxiv.org/abs/1710.02327v2
- ID情報
-
- DOI : 10.1103/PhysRevD.96.122006
- ISSN : 2470-0010
- eISSN : 2470-0029
- arXiv ID : arXiv:1710.02327
- Web of Science ID : WOS:000418918800001