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• W3022220801 abstract "The sensitivity of wide-parameter-space searches for continuous gravitational waves is limited by computational cost. Recently it was shown that Deep Neural Networks (DNNs) can perform all-sky searches directly on (single-detector) strain data, potentially providing a low-computing-cost search method that could lead to a better overall sensitivity. Here we expand on this study in two respects: (i) using (simulated) strain data from two detectors simultaneously, and (ii) training for directed (i.e. single sky-position) searches in addition to all-sky searches. For a data timespan of $T = 10^5, s$, the all-sky two-detector DNN is about $7%$ less sensitive (in amplitude $h_0$) at low frequency ($f=20,Hz$), and about $51,%$ less sensitive at high frequency ($f=1000,Hz$) compared to fully-coherent matched-filtering (using WEAVE). In the directed case the sensitivity gap compared to matched-filtering ranges from about $7-14%$ at $f=20,Hz$ to about $37-49%$ at $f=1500,Hz$. Furthermore we assess the DNN's ability to generalize in signal frequency, spindown and sky-position, and we test its robustness to realistic data conditions, namely gaps in the data and using real LIGO detector noise. We find that the DNN performance is not adversely affected by gaps in the test data or by using a relatively undisturbed band of LIGO detector data instead of Gaussian noise. However, when using a more disturbed LIGO band for the tests, the DNN's detection performance is substantially degraded due to the increase in false alarms, as expected." @default.
• W3022220801 created "2020-05-13" @default.
• W3022220801 creator A5046968340 @default.
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• W3022220801 date "2020-07-06" @default.
• W3022220801 modified "2023-10-14" @default.
• W3022220801 title "Deep-learning continuous gravitational waves: Multiple detectors and realistic noise" @default.
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• W3022220801 doi "https://doi.org/10.1103/physrevd.102.022005" @default.
• W3022220801 hasPublicationYear "2020" @default.
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