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- W3098456040 abstract "The multi-detector -statistic is close to optimal for detecting continuous gravitational waves (CWs) in Gaussian noise. However, it is susceptible to false alarms from instrumental artefacts, for example quasi-monochromatic disturbances ('lines'), which resemble a CW signal more than Gaussian noise. In a recent paper (Keitel et al 2014 Phys. Rev. D 89 064023), a Bayesian model selection approach was used to derive line-robust detection statistics for CW signals, generalizing both the -statistic and the -statistic consistency veto technique and yielding improved performance in line-affected data. Here we investigate a generalization of the assumptions made in that paper: if a CW analysis uses data from two or more detectors with very different sensitivities, the line-robust statistics could be less effective. We investigate the boundaries within which they are still safe to use, in comparison with the -statistic. Tests using synthetic draws show that the optimally-tuned version of the original line-robust statistic remains safe in most cases of practical interest. We also explore a simple idea on further improving the detection power and safety of these statistics, which we, however, find to be of limited practical use." @default.
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- W3098456040 date "2015-01-05" @default.
- W3098456040 modified "2023-09-24" @default.
- W3098456040 title "Line-robust statistics for continuous gravitational waves: safety in the case of unequal detector sensitivities" @default.
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- W3098456040 doi "https://doi.org/10.1088/0264-9381/32/3/035004" @default.
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